Blessed be the blackmailers, Jack thought as he pawed through the filing cabinet.

He had a penlight clamped in his teeth and kept it trained on the labels of the hanging folders while his latex-gloved fingers fanned through them.

What a trove. If someone could be called a professional blackmailer, Richie Cordova fit the bill. Private investigation was his legitimate line, if such a line could be legit. But apparently he dug up lots of additional dirt during the course of his investigations, and put that to work for him. Never against his clients, Jack had learned. Did his blackmailing anonymously. That kept his professional rep clean, kept that stream of referrals from satisfied clients flowing. But Jack had picked him up on a money drop Cordova had set up for his latest fish and took an instant dislike to the fat slob. Nine days of shadowing him hadn't mellowed that initial impression. The guy was a jerk.

Cordova's PI office occupied a second floor space over an Oriental deli on the other side of Bronx Park. But his other line of work, probably the more profitable one, was here on the third floor of his house. Small and stuffy, furnished with the filing cabinet, a computer, a high-end color printer, and a rickety desk, it appeared to be a converted attic.

Where was the letter? Jack was counting on it being in this cabinet. If not —

There ... Jank. Could that stand for Jankowski? He pulled out the file and opened it. Yep. This was it. Here was the handwritten letter at the root of Stanley Jankowski's problems. Cordova had found it and was using it to squeeze the banker for all he was worth.

Jack tucked it in his pocket.

Yes, blessed be those blackmailers, he thought as he began emptying the folders from both drawers of the cabinet and dropping their contents — letters, photos, negatives — onto the floor, for they help keepeth me in business.

Blackmail was the reason a fair percentage of Jack's customers came to him. Stood to reason: They were being blackmailed because they had something they wanted kept secret; couldn't go to officialdom because then it would no longer be a secret. So they were left with two options: pay the blackmailer again, and again, and again, or go outside the system and pay Jack once to find the offending photos or documents and either return them or destroy them.

Destroying was better and safer, Jack thought. But untrusting customers feared Jack might simply use the material to start blackmailing them on his own. Jankowski had been burned and wasn't about to trust no one no how no more. He wanted to see the letter before he paid the second half of Jack's fee.

Jack spread the two drawers' worth of photos and documents on the floor. A small, voyeuristic part of him wanted to sit and sift through them, looking for names or faces he recognized, but he resisted. No time. Cordova would be back in an hour.

He pulled a pair of glass Snapple bottles out of his backpack and unwrapped the duct tape from around their tops. He was about to do a big favor for some of the people in that pile. Not all. Cordova had probably scanned all this stuff into a computer and had digital copies stashed away somewhere. But a scan couldn't sub for a handwritten letter. Cordova needed the original, with its ink and fingerprints and all, to have any real leverage. A copy, no matter how close to the original, was not the real deal and could be dismissed as a clever fake.

He looked down at the pile of damning evidence. Some of these folks were about to get a freebie. Not because Jack particularly cared about them — for all he knew, some of them might deserve to be blackmailed — but because if he took just the Jankowski letter, Cordova would know who was behind this little visit. Jack didn't want that. With everything destroyed or damaged beyond repair, Cordova could only guess.

Burning the pile would have been best but the guy lived in a tight little Williamsbridge neighborhood in the upper Bronx. Lots of nice, old, post-war middle-class homes stacked cheek by jowl in a neat grid. If Cordova's place burned, it wouldn't burn alone. So Jack had come up with another way.

He held one of the Snapple bottles at arm's length as he unscrewed the cap. Even then the sharp odor stung his nose. Sulfuric acid. Very carefully — this stuff would burn right through his latex gloves — he began to sprinkle it on the pile, watching the glossy surfaces of the photos smoke and bubble, the papers turn brown and shrivel.

He'd used up most of the first bottle and the room was filling with acrid smoke when he heard the front door slam three floors below.

Cordova?

Checked his watch: about a quarter past midnight. In the past week or so that Jack had been shadowing him, Cordova had hit a neighborhood bar over on White Plains Road three times, and on each night he'd hung till 1 A.M. or later. If that was Cordova downstairs, he was home at least an hour early. Damn him.

Dumped the rest of the acid from the first bottle and sloshed the contents of the second over the pile, then left them atop the filing cabinet. Now to get out of here. Wouldn't be long before Cordova detected the stink.

Opened the window and slid out onto the roof. Looked around. He'd planned on leaving as he'd entered — through the back door. Now he was going to have to improvise.

Jack hated to improvise.

Looked over at the neighboring roof. Pretty close, but close enough to ...?

Through the open window behind him he heard Cordova's heavy feet pounding up the stairs. Another glance at the neighboring roof. Guessed it was going to have to be close enough.

Hauling in a deep breath, Jack took three running steps down the shingled slope and leaped. One sneakered foot, then the other, landed on the opposing roof and found traction. Without pausing to congratulate himself, Jack used his forward momentum to keep going, his rubber soles slipping and scraping up the incline toward the peak.

A loud, whiny "Noooooo!" followed by a bellow of rage and dismay echoed from Cordova's house, but Jack didn't turn to look — didn't want Cordova to see his face. Then he heard a shot and almost simultaneously felt the slug zing past his ear.

Cordova had a gun! Jack had figured he'd have one somewhere, but hadn't expected him to shoot up his own neighborhood. Two miscalculations tonight. He hoped he hadn't miscalculated on getting home alive.

Dove over the peak of the roof and slid down toward the gutter, the shingles shredding the palms of his latex gloves and wearing away the front of his nylon windbreaker like an electric sander. Halfway to the gutter he slowed his slide and angled his body ninety degrees. That slowed him a little more. Further angling around allowed him to get his foot in the gutter and stop altogether.

Not home free yet. Still two stories up with Cordova no doubt pelting down his stairs and heading for the street. Plus this house was occupied, probably with two families, since that seemed the rule around here. He could see the glow of lights turning on inside. He was sure the owners were dialing 9-1-1 right now to report the racket on their roof. Probably thought he was a clumsy second-story burglar.

Jack peeked over the gutter and positioned himself over a dark window. Slid off the roof feet first and belly down, easing his weight onto the gutter. It groaned...