“No bugs for me.”

“They’re not alive.”

“No bugs, period. I owe you, okay? There’s no choice here.”

I started down the narrow corridor to my right, trying the doors and finding several of them locked. The fifth knob gave easily, and I groped along the wall till I found the light switch.

This hallway had possibilities. Here was a room labeledBarosaurus Femurs, with leg bones larger than tree stumps. A quick scan suggested nothing small enough to be human, but I could not reach the higher shelves or see their contents. I marked it on my pad for a return visit.

Door after door yielded similar fossilized parts. Some rooms were all dinosaur heads, with hollow eye sockets four feet in diameter and horned nostrils that stood taller than my waist. Others had nothing but vertebrae lined up end to end. It would be hard to discern, without an expert guide, whether any other species remains had been mixed in with these antiquities.

I reached the end of the gray hallway and pushed against the last door, meeting with resistance as I did. It opened slowly, operating on a rusty old air pump hinged on the wall behind it. I leaned against the door to secure it in place while I studied the contents of the room. This one stored even smaller bones, and I walked to a rack against the far wall to study a tag that appeared to have some written description on it.

As I bent over to read it, hoping the bare bulb from the far end of the hallway would provide enough light for me, the door came loose from its anchored position. I heard a loud whooshing sound as it sprung away from the wall and slammed shut, leaving me alone in the confined space with a century’s accumulation of dust-covered animal skeletons.

I tried to tell myself that I was too tired to be upset. I talked to myself like a mother calming a six-year-old child. They’re just bones, I kept repeating, as I tried to get my bearings and make my way back to the door in the dark. There’s nothing in here to hurt me. I’m in a museum, the most child-friendly museum in the world, and my favorite policeman is fifty yards away.

I reached out to hold on to a shelf to help me feel my way back to the exit. I brushed against the rough surface of a ragged piece of cartilage and moved my hand upward to grasp the cool steel of the rack instead. Inching along step by step, I startled myself when I struck a glass object, banging it against something else.

It was a large glass jar.

Shit. I stopped in my tracks. Like dominoes, the jar I hit had knocked against its neighbor, rattling the one behind it until another in the next row toppled on its side and broke. The noxious fluid inside splashed to the floor, releasing both a foul smell and whatever pickled creatures had been sleeping inside.

Now panic set in. I looked up at the shelves over my head. Dozens and dozens of mason jars lined the walls above me. The only light in the room was the iridescence emitted by the bright pink dye that illuminated all of the bottled skeletal remains. Some kind of prehistoric crawlers were in those bottles, unidentifiable wet specimens that glowed against the darkness of the room.

I took another step forward, sliding on the slippery substance from the broken jars that coated the floor. Two more steps and I heard a crunching noise below my heel, as though I was walking on some kind of hard-shelled insect. My foot slipped on the wet slime, and again I grabbed for the shelf. The entire rack was on wheels and it rattled wildly as my bug phobia took firm hold.

I reached out my left hand to feel for the door, still clutching the end of the metal shelves. I gripped the knob when I found it and pulled hard with both hands. It wouldn’t give. Stay calm, I told myself. It was hard to open from the other side, so now it’s just stuck again. I yanked with all my strength, my hands greasy from the sweat I was working up. I couldn’t budge the knob in either direction.

I felt along the side of the door for a light switch. Nothing. There was no fresh air in the room, and some sightless fossil with a prickly snout and a snakelike body was eye level with me, daring me to rescue both of us from this claustrophobic cell.

Patting the pockets of my jacket and pants was another useless gesture. I opened the lid on my cell phone and powered it up, but was unable to dial any number from this black hole in the museum basement. I used the point of my pen to try to jimmy the catch on the lock, but it was way too old and sticky to respond.

Feeling behind me, I stepped back and began to scream for Mike. I yelled as loud as I could, kicking against the door like Shirley Denzig had done at my garage the night before. I stopped yelling and listened for the sound of footsteps, but the walls were so thick that I doubted he could hear me any better than I could hear him.

Now the fumes from the liquid I’d released were filling the room. I mustn’t get dizzy, I told myself. I did not want to be down on this floor with whatever had dripped out of the large jar, that much I knew.

Turning in place, I looked again to the far end of the space. In the ghoulish pink glow I could make out the square design of a small window high on the wall that might give out onto the courtyard. It was covered with a shade, and too tiny to get through, but if I could break it open it would give me some air and maybe someone would hear my shouts.

Behind me, I thought I heard the doorknob rattle. I spun around, stepped toward it and yelled Mike’s name again as loud as I could. Nothing. Had I imagined the noise?

I wiped the sweat from my forehead but the thought was already planted in my brain: What if this was no accident? What if we had surprised the killer by coming down to the basement tonight? What if he-or she-had trapped me in this room after I walked in alone, and then gone back to do something even worse to Mike? What if Mike never got here to open this door?

I moved to rest my back on the rack but I landed against it harder than I had intended. It rocked and swayed, and the small set of wheels on the end closest to me spun off and whirled across the room. The shelves slanted downward, and everything hurtled to the floor.

Glass jars crashed and split into pieces, spraying their contents all over the floor. The odor was unbearable, and I coughed and choked on the fumes as they rose from beneath me and invaded my mouth and nose. I was almost panting because of my fear, and the faster the breaths came, the more the odor was drawn into my nostrils and throat.

Animal bones slid off the shelves and over my head and shoulders. I took three steps toward the window and reached up to brush something out of my hair.

Beetles. Thousands of beetles had been stored in the jars and now littered the room, some of them landing on my body as they fell. I choked again, this time fighting back the urge to be sick.

What had Zimm told us? Beetles were used all over the museum to eat the flesh off dead specimens. These must have been sealed into jars with their last meals, then left to rot on dusty trays in the deserted room.

The rational spirit within me kept saying that someone would surely find me before daylight. My other internal voice reminded me that whoever had slammed the door shut would be back to finish me off, if these awful creatures didn’t do it first.

I walked as carefully as I could toward the wall with the window. Beneath it was a metal tank, the same kind of enormous vat that Zimm had shown us-the kind in which the prehistoric fish had been stored in its alcohol bath. Would the lid of that tank support me so that I could climb up onto it and try to break open a pane of the small glass opening behind the window shade?

Again the jiggling sound of the doorknob, and this time, with renewed urgency, I froze in place and screamed, “Michael! Mike Chapman. Get me out of here. I can’t breathe.”