Why on earth did Hargate want to marry her? He could have his pick of unmarried ladies, many of whom were at this very garden party, who would gladly marry him for his standing, wealth, and when a seat came empty, his place in the House of Lords. Plenty of young ladies with respectable families and good dowries would have already started planning the wedding as soon as they walked into the tea tent. What was Hargate up to?

Louisa drew a breath, hardening her resolve. “Your Grace, I . . .”

The bishop looked up at her over his teacup, and as he did, Louisa noted that his face had lost most of its color. His cheeks had taken on a greenish tinge, and Hargate’s breath hitched.

“Are you all right, Your Grace? Perhaps we should adjourn to the open air.”

If Hargate had eaten something that disagreed with him, that would put paid to this awkward proposal. Louisa caught the bishop’s arm, ready to lead him out and give him over to the ministrations of their hostess.

“Loui—” Hargate had to stop to draw a breath. He coughed, staggered, and coughed again.

Louisa began to be truly alarmed. “Come outside with me, Your Grace. We’ll take you to the house, where you can rest out of the heat.”

Hargate tried to take another breath. His eyes widened as air eluded him, and he dropped his teacup, splashing tea across the grass. He sagged against Louisa, his eyes and mouth wide, his chest heaving, but no air moving inside.

“A few more steps is all,” Louisa said, trying to support him. “You’ll be all right once we get outside.”

Hargate took one more step before his legs buckled and he fell heavily against Louisa’s side. Down went Louisa’s plate, which she realized she was still clutching, the plate breaking, creamy profiteroles smearing on the dead grass.

“Your Grace.”

Louisa couldn’t hold him. Hargate landed on his back, Louisa on her knees next to him, her blue and brown striped skirt spreading over the tea-dampened grass. Hargate’s face had gone completely gray, and hoarse little gasps came from his mouth.

A doctor. She needed to fetch a doctor. One was here at Mrs. Leigh-Waters’ garden party, a very famous one called Sir Richard Cavanaugh.

Louisa scrambled to her feet. “I’ll find Sir Richard. Don’t worry. Help is coming.”

As she ran out, the heel of her high-heeled lace-up boot caught the teacup Hargate had dropped, smashing it to bits.

Louisa dashed into the open air, scanning the guests in desperate search of Sir Richard. There he was, speaking with Louisa’s sister, Isabella, and another old friend of Louisa’s, Gilbert Franklin. Both Isabella and Gil turned with welcoming smiles as Louisa panted up, but Isabella’s smile faded in concern.

“Darling, what is it?”

“Hargate . . . in the tea tent. Taken ill. He’s collapsed. Please, Sir Richard. He needs you.”

Sir Richard, a short and lean man with dark hair going to gray and an arrogant manner, seemed uneager to set aside his tea and rush across the lawn at Louisa’s request. “What seems to be the matter with him?” he asked.

Louisa resisted the urge to grab the man and shove him down the hill. “Please, you must hurry. I think he is having a fit. He can’t breathe.”

“Good Lord,” Gil said, managing to sound pleasant even with his worry. “We’d better see to him, Cavanaugh.”

Sir Richard frowned, then finally he sighed, passed his teacup to a footman, and gestured for Louisa to lead him to the tent.

He walked too slowly. Louisa had to wait for Sir Richard, she holding the tent flap open impatiently while he sauntered in. Isabella, Gil, and Mrs. Leigh-Waters followed, along with a smattering of curious guests.

Sir Richard at last showed concern when he saw Hargate, who hadn’t moved. Sir Richard went down on one knee next to the bishop and looked him over, felt his pulse points and his heart, then leaned down and sniffed at Hargate’s mouth.

The doctor gently closed the bishop’s wide, staring eyes before he got to his feet. His arrogant look had grown more arrogant, but it was more focused now, more professional.

“He is dead,” Sir Richard announced. “Nothing I can do for him. Send for the police, Mrs. Leigh-Waters. The bishop appears to have been poisoned.” He looked at Louisa when he said it, his accusing gaze like a stab to the heart.

Chapter Three

London was Lloyd Fellows’ home. He knew every street from Whitehall to the East End, from the Strand to Marylebone and all points in between. He’d known them as a boy living in St. Giles with only his mother to raise him. He’d learned more as a constable walking a beat, and even more as a detective sent to every corner of London and beyond.

Fellows knew every street like he knew his own name—who lived where, what businesses, legitimate or illegal, were where, and what people walked the streets and when. He knew every corner, every passage, every hidden staircase. Metropolitan London might be divided into districts by the government, and into cultural areas by the people who lived there, but to Fellows, London was one, and it belonged to him.

This fine April afternoon, he entered a dark passage off Crawford Street, aware of what awaited him at the end. His constables weren’t with him, because the culprit they were pursuing had changed course, and they’d split up to surround him.

Fellows was after a murderer, a man called Thaddeus Waller, who’d been nicknamed the Marylebone Killer. Waller had brutally murdered his brother and brother’s wife, then covered up the crime and pretended grief, even to taking in his brother’s children to raise.

Fellows, recently promoted to detective chief inspector, had investigated the deaths with a ruthlessness that had alarmed his superiors. But he’d uncovered fact after fact that pointed to Waller as the killer. Finally Fellows had obtained a warrant for Waller’s arrest and had gone with his constables to Marylebone to bring him in.

Waller had seen them coming and used his own wife and his brother’s children as hostages. Fellows’ fury had wound higher as Waller had held a little boy out the upstairs window, threatening to drop him to the cobbles if the police didn’t go away. The lad had cried weakly in terror as he’d hung helplessly, high above the street.

Fellows had left his constables to catch the boy if he was dropped, stormed upstairs and kicked his way into the flat, his rage making him not care what weapon Waller decided to draw on him.

Waller’s terrified and weeping wife at least managed to drag the boy back in through the window. When Fellows burst in, Waller had jumped through the window himself to the street one floor below. The constables tried to grab him, but Waller had fought like mad, they’d lost hold of him, and he’d fled.

Fellows had swung himself out the window right after him. He’d chased Waller through crowded streets to the passage where the man now hid. Fellows knew this passage. It was narrow and dark, twisted sharply to the right at its end, and emerged via a shallow flight of stairs to another street.

He sent his constables around to the stairs to bottle in Waller, while he dashed into the passage alone. Waller was going to fight, and Fellows knew his constables stood no chance against him. Although they were good and robust lads, they didn’t understand dirty fighting or what a man like Waller could do.

Fellows had grown up with dirty fighting. He knew about the destructive power of bits of brick in his hand, the various ways small knives could be used, and how to pit an opponent’s own weight and reach against him.

Waller would know the constables waited for him above. He’d make a stand. He’d killed his own brother, for God’s sake, had killed more men in the past, and wasn’t above using a child as a shield.

Fellows was one man, alone. But he knew that if he waited for help, Waller stood a chance of getting away. Fellows wasn’t going to let him.

The passage was dark, shielded from the April sunlight by high, close-set buildings. Fellows couldn’t see much, but he could hear.

Waller tried to mask his breathing, but the heavy intake of it was too thick to hide. The scuttle of rat’s claws on the cobbles also came to Fellows, as well as the clatter of carts on the streets outside, the wind pouring between buildings. Fellows pinpointed each sound, identifying and cataloging it as he moved to the source of the breathing.

The attack came swiftly. Fellows sensed the first swing of a massive fist and ducked. He rose, bringing up his elbow to slam the man in the diaphragm.

Fellows was rewarded with a blow to the head, one that darkened his world a moment. He dragged in a breath, trying to find his equilibrium, before another punch to his skull sent him to his knees. Waller didn’t waste breath laughing or gloating. He slammed his arm around Fellows’ neck and started to choke him.

Fellows shoved himself to his feet and threw his weight forward. Waller grunted and his hold loosened. Fellows dug his hands into the man’s shoulders and continued the momentum of the throw, ending up slamming Waller against the wall of the narrow passage.

Waller grunted and stumbled but swiftly regained his feet. He came at Fellows, roaring, no longer trying to be surreptitious. The constables poured down the stairs from the other end, against orders, their clubs ready.

Fellows and Waller fought, close and desperate, in the confined space. Boulder-like fists slammed at Fellows’ face. Fellows ducked under the man’s reach, came up abruptly, and smashed his fist into Waller’s jaw. The jaw broke, and Waller fell, screaming.