“Laing’s not stupid,” Wardle continued. “We hadn’t been questioning him long when he twigged what it was about. He knew you must’ve given us his name. He’d seen in the papers you got sent a leg.”

“What was his view on the matter?”

“There might’ve been an undertone of ‘couldn’t’ve happened to a nicer bloke,’” said Wardle with a slight grin, “but on balance, about what you’d expect. Bit of curiosity, bit of defensiveness.”

“Did he look ill?”

“Yeah,” said Wardle. “He didn’t know we were coming, and we met him shambling along on his sticks. He doesn’t look good close up. Bloodshot eyes. His skin’s kind of cracked. Bit of a mess.”

Strike said nothing. His mistrust of Laing’s illness lingered. In spite of the clear photographic evidence of steroid use, skin plaques and lesions that Strike had seen with his own eyes, he found himself stubbornly resistant to the idea that Laing was genuinely ill.

“What was he doing when the other women were killed?”

“Says he was home alone,” said Wardle. “Nothing to prove or disprove it.”

“Hmn,” said Strike.

They turned back into the pub. A couple had taken their table so they found another beside the floor-to-ceiling window onto the street.

“What about Whittaker?”

“Yeah, we caught up with him last night. He’s roadying for a band.”

“Are you sure about that?” said Strike suspiciously, remembering Shanker’s assertion that Whittaker claimed to be doing so, but was in fact living off Stephanie.

“Yeah, I’m sure. We called in on the druggie girlfriend—”

“Get inside the flat?”

“She talked to us at the door, unsurprisingly,” said Wardle. “The place stinks. Anyway, she told us he was off with the boys, gave us the address of the concert and there he was. Old transit van parked outside and an even older band. Ever heard of Death Cult?”

“No,” said Strike.

“Don’t bother, they’re shit,” said Wardle. “I had to sit through half an hour of the stuff before I could get near Whittaker. Basement of a pub in Wandsworth. I had tinnitus all the next day.

“Whittaker seemed to be half expecting us,” said Wardle. “Apparently he found you outside his van a few weeks ago.”

“I told you about that,” said Strike. “Crack fumes—”

“Yeah, yeah,” said Wardle. “Look, I wouldn’t trust him as far as I could throw him, but he reckons Stephanie can give him an alibi for the whole day of the royal wedding, so that would rule out the attack on the hooker in Shacklewell, and he claims he was off with Death Cult when both Kelsey and Heather were killed.”

“All three killings covered, eh?” said Strike. “That’s neat. Do Death Cult agree he was with them?”

“They were pretty vague about it, to be honest,” said Wardle. “The lead singer’s got a hearing aid. I don’t know whether he caught everything I asked him. Don’t worry, I’ve got guys checking all their witness statements,” he added in the face of Strike’s frown. “We’ll find out whether he was really there or not.”