He called in again.

"Okay, folks. He's right on course. Hitting the Memorial bridge now.

Everybody be ready to roll as soon as he hits Constitution." Gerry didn't hang up this time, but kept the channel open as he passed the Seabees Memorial and cruised between the granite bald eagles that flanked the entry to the bridge. The massive white marble box of the Lincoln Memorial squatted directly ahead on the far side, and the Washington Monument loomed to his right. He followed Marsden around the Lincoln and onto the Henry Bacon diagonal to Constitution.

As a dark wedge of the Vietnam Wall in its depression slipped past on his right, he said, "Coming to Constitution. Go! " And now those stomach roosters were really kicking up. Timing was crucial here. It had to go down within the next few blocks, but the Bureau's stunt driver had to wait for an opportunity. Not only did he have to make contact, but he had to get away.

A Nova . . . he'll be driving an old blue Chevy Nova.

Cruising with the commuters as they paced the Potomac along Constitution Avenue, Gerry's gaze roamed side to side, flicked from mirror to mirror. Then he spotted the car, weaving through the traffic behind him. He pulled over to let it pass. A brief glimpse of the driver showed a knitted cap pulled low over the forehead, an old flannel shirt with the collar up. Gerry couldn't help a nervous smile.

Trevor Hendricks looked to be anything but a special agent.

"Don't miss, Hendricks, " he whispered. "Please don't . . . miss .

Gerry chewed his lip as he watched Hendricks edge nearer the senator's car, looking for his chance. He found it at Igth, across from the Department of the Interior. Marsden was just pulling up to a red light when the Nova lunged ahead and swerved into the senator's Town Car.

Only a glancing blow but enough to cave in the left front fender. The Lincoln lurched to a halt while the Chevy burned rubber and peeled off down Constitution.

Gerry pulled to a halt directly in front of the senator and - trotted back to his window.

"You okay? " "Yes, " said Marsden, looking a little pale and shaken, but apparently uninjured. "Did you see that crazy son of a bitch? " Gerry stared down Constitution and saw the Nova make a right onto 17th.

Hendricks would dump the car there, mingle with the tourists gathering around the Washington Monument, then walk the few blocks back to the Bureau. The car was a gift from the DEA, the unregistered, confiscated property of a drug mule.

"Saw the whole thing." He pulled a card from his pocket.

. "If you need a witness, say . . . aren't you Senator Marsden? " '"Yes. Yes, I am. ' Gerry thrust his card through the open window.

"Canney. Special agent FBI. I'll call this in." Without giving Marsden a chance to reply, Gerry whipped out his cellular phone, flipped it open, and turned his back to the senator as he pretended to make a call.

"The police should have someone here in a second, " he said, turning back to the car. "You're sure you're all right? " "Positive. Look, we're blocking traffic here. Why don't I just pull ahead and see if I can get off the road. ' Gerry looked back and saw that they'd created a minor traffic jam by reducing inbound traffic from three lanes to two. But he didn't want Marsden going anywhere.

"Don't know if that's such a good idea. Let me take a look at the damage here." He stepped toward the front fender and bent over it.

Hendricks had done a perfect job, the metal was folded in against the tire.

"I don't think you're going anywhere, sir." As he straightened he saw Marsden starting to get out. Gerry stepped up and gently eased him back into his seat.

"Maybe you shouldn't move just yet, Senator."

"I'm perfectly all right. It was just a fender bender." Gerry stood firm, blocking the door with his body. "Still, sir, I think it would be smarter and safer if you moved as little as possible until help arrives."

"Don't be ridiculous! I'm perfectly fine and fully capable of, " A blue and white unit roared up then, sirens wailing, lights flashing, followed closely by an ambulance and a mobile ICU, all with the Bureau.

The senator was adamant against being taken to the hospital. He protested vigorously, but since his car wasn't going anywhere, and since the cop and the E.M.Ts weren't taking no for an answer, and G.W.U hospital was only six blocks up the street, he finally relented.

As the ambulance wailed off, Gerry leaned back against the Lincoln's damaged fender and took a deep, relieved breath. The diciest part was over, and Marsden had come through without a scratch.

Did it!

Christ, what a feeling. Almost like sex. If he smoked he'd be reaching for a cigarerte.

But now came the most important part, finding that implant.

Gerry hoped to God it was findable. Because if they missed it, there was going to be hell to pay.

Gin huddled in the dictation area of the records room and pressed the receiver against her ear to keep any trace of Gerry's voice from escaping.

She hadn't wanted to come in today, but Gerry had thought it best not to deviate from her routine.

"All right, " Gerry said. "We've got the senator here in the emergency room. Let me just go over this again to make sure there's no mistake.

We're all set up to do a magnetic resonance image of his right leg.

That's what we want, right? " "Right. An Mr I with special attention to the lateral midthigh. Tell them to look for the healing puncture wound in the skin. The implant should be somewhere within a three- or four-inch radius from there." "Okay. Just triple-checking."

"And Gerry." She lowered her voice to a whisper. "Don't let anyone use an ultrasound to find it, okay? Sometimes they use ultrasound to locate foreign bodies in soft tissue, but don't let them. Don't let anyone even near him with an ultrasound." Diagnostic ultrasound used a tiny fraction of the power of the therapeutic modality, but why chance it?

"Okay. No ultrasound. Look, I've got to run. We should have the answer soon." '"Call me."

"Soon as I can. Once we identify it, we've got to tell Marsden and convince him it should come out immediately. That may not be so easy."

"Just save him, okay? " "I'm doing my damnedest."

"I know you are. Love you. ' He was silent a moment, probably as surprised as Gin herself that she'd come out and said that. Where had it come from?

From the heart, I guess, she told herself.

"I feel the same way, " he said, and she had to smile. He probably had a dozen other agents around him. "Let's get together after the dust settles here. We need to talk."

"Think you'll be able to come over for dinner tonight? " '"I think that can be arranged. Want me to bring something? " "Just Martha."

"Martha? " "Yeah. I haven't seen her in a while."

"Great."

"We'll stay in. I'll cook again. How's broccoli and linguine sound?

" "Martha will love it. ' '"Great. Bye.

" Gin sat there a moment, staring into space. She hadn't wanted to be alone tonight. With Gerry and Martha as company, maybe she wouldn't feel so terrible about all this.

Gerry had sounded both excited and tense. Gin felt only nausea. When they found the implant, Gerry's job would be done. They'd hand Senator Marsden over to the doctors for its removal and the case to the federal prosecutors.

But Gin's involvement would not end. Somewhere along the line she'd have to face Duncan.

She shuddered. She felt like a rat. He'd saved her life, given her a job in high school, and now another. He'd been unfailingly generous for as long as she'd known him, and this was how she repaid him.

But how could she let him go on doing what he'd been doing?

She'd done the right thing, damn it. Ethically, morally, legally, the right thing.