Langer nodded. His eyes showed pity, but she sensed that it was manufactured. “Yes, I’m afraid he is. You never said why you were there.”

“I know,” Carson said. “That’s a longer story.”

“I have time.”

“Apparently, I don’t.” She glanced toward the doctor, who recognized it as his cue to move ahead with his treatment plan.

Langer raised his hand to freeze the action. “Don’t push me, Ms. Carson. Right now you’re the only living person found at the scene of a bombing. That makes you a suspect.”

“I’m not going far,” she said.

“She has a point,” Dr. Ahmed intervened. “Speak with her now, speak with her in twenty hours, after surgery and recovery. What difference does it make?”

“It makes a lot of difference,” Langer said. “This wasn’t just any bomb, Doc.” He shifted his gaze to Carson. “This was a thermobaric device, much more—”

Carson gasped. She hadn’t intended to and if it weren’t for whatever meds she was on, she never would have shown her hand like that.

“That mean something to you, Ms. Carson?” Langer asked.

Hell yes, it meant something to her. Thermobarics were a class of explosives that allowed low-density charges to produce high-density yields. Whereas standard explosives contain chemical oxidizers in high concentrations to allow the mixture to consume all of its fuel in a single instant, thus producing its blast effects, a thermobaric device has relatively low levels of oxidizer, but is packed with highly combustible, often exotic fuels. When the charge detonates, the finely divided fuel is dispersed over a wider area and the oxygen in the air performs the role that the chemical oxidizer performs in standard explosives. In effect, the disbursed cloud of fuel continues to detonate, often at higher temperatures, thus expanding the kill radius tremendously.

“Not a thing,” Carson lied.

“I don’t believe you.”

“Then arrest me.”

“Consider it done.”

“Excellent,” Carson said. She turned to the doctor. “Can I go to surgery now?”

Dr. Ahmed smiled. “Absolutely.”

“Consider her to be in custody, Doc,” Langer said. But he seemed suddenly flummoxed, as if this new turn had been totally unexpected.

“It will be foremost on my mind,” the doctor said.

Three minutes later, they were on their way to the elevator—all three of them, plus a couple of nurses and seeming hangers-on. Langer made a point, it seemed, to always be within Carson’s eyesight. The elevator took them to a set of double doors over which a sign read: SURGERY. AUTHORIZED PERSONNEL ONLY. Below that was a smaller sign with an arrow that directed everyone else to the waiting area.

“You cannot go in,” Ahmed said to Langer.

The cop seemed to be struggling for words. “She’s your responsibility, then,” he said. He probably wanted it to be a more withering threat than it turned out to be.