Elk Grove, Virginia

Maggie had a premed background only because once upon a time her father had encouraged her to become a medical doctor. However, after a sideswiped childhood that drop-kicked her into the role of caretaker for her alcoholic suicidal mother, Maggie discovered she was more interested in what made the mind tick rather than the heart.

Still, she studied premed out of a sense of obligation to her dead father. Eventually she ended up in psychology and then forensics. Her premed training allowed her to assist at autopsies and sometimes came in handy at crime scenes. This time it helped her recognize that Mary Louise and her mother had not been poisoned. Instead, they’d been exposed.

If the threat in the note proved true, that there was going to be a “crash,” then Mary Louise and her mother had not only been exposed to some biological agent but it was now trying to live inside them. Maggie recognized the term, often used as “crash and bleed out” when military and medical personnel spoke about biological agents. The crash would come when the biological organism ended up destroying its host, and it usually did so from the inside out.

The SWAT team had recognized the term, as well. It had taken little to convince them to leave, even though they all wore gas masks and would have, most likely, been safe. At first Cunningham had ordered Maggie to leave with them. It didn’t take long for her to see the realization in his eyes. There was a combination of regret and guilt, maybe a bit of fear when it finally hit him. He couldn’t let her leave. He couldn’t let either of them just walk out.

They agreed they had to stay out of the bedroom but only after a brief argument. Maggie knew Cunningham was right. They had no idea what they had walked into. Yet Maggie’s medical training and her instinct clashed with common sense. What if there was something she could do for Mary Louise’s mother? The woman’s raspy breathing mixed with a rhythmic hiss and spray. It sounded like she was choking on her own blood and mucus. Maggie knew how to perform a field tracheotomy that would clear the woman’s airway.

Cunningham’s response was to order Maggie out of the room. When she started to challenge him, he stood between her and the sick woman and pointed toward the bedroom door. She had no choice but to turn around and leave. Cunningham wouldn’t allow Maggie to help. Instead, he took Mary Louise to the bathroom to clean her up and clean himself, as well. He stopped Maggie from even following them. She knew he was trying to protect her, a valiant but useless gesture. Maggie knew that it was probably too late. Mary Louise’s vomit had sprayed her, too.

For some reason memories of her first crime scene came back to her. Perhaps because Cunningham had tried to protect her then, as well. She had just finished her training as an agent after a year as a forensic fellow at Quantico. It was in the middle of the summer, hot and humid, and the inside of the double-wide trailer must have been ten to fifteen degrees hotter. She had never seen so much blood sprayed everywhere: the walls of the trailer, the furniture, the plates left out on the kitchen counter. But it was the sour smell of rotting flesh and the buzzing of flies that stayed firmly implanted in her memory.

She had thrown up, contaminating the crime scene, a newbie losing it on her first case. But Assistant Director Cunningham, who had been so tough on her throughout her entire training—pushing her, questioning her, nagging her—kept one hand on her shoulder while she retched and choked and spit. He never once reprimanded or chastised her. Instead, in a low, quiet, steady and reassuring voice he said to her, “It happens to all of us at least once.”

Now here in this little house in a quiet suburb that day seemed so long ago. Maggie looked around the living room, zoning out the laugh track and sound effects of TV cartoons.

How did he do it?

She let her eyes take in everything again, only this time she tried to imagine a similar delivery system like the doughnut container. There were no pizza boxes, no take-out containers, no pastry boxes. He would have wanted it to be something ordinary, something disposable and most importantly, something unnoticeable.

There was much to learn about a killer from the victims he chose. So why did he choose Mary Louise and her mother? Maggie took in the contents of the room. The furniture was an eclectic combination: a particleboard bookcase, a flowered threadbare sofa and mismatched recliner, a braided rug and a brand-new flat-screen TV. The wooden coffee table with scuffed corners appeared to be the centerpiece of the family, holding the TV remote, a pair of reading glasses, dirty plates and mugs sitting in milk rings, crumpled potato chips, spilled bags of M&Ms, a coloring book and box of sixty-four crayons, some scattered and broken on the rug.

In the corner two stacks of magazines teetered next to a desk. A pile of mail—catalogs, envelopes and packages in various stages of opening—covered a writing desk; some of the pile had fallen onto the chair.

There were several pictures on the bookcase: Mary Louise at different ages, sometimes with her mother. One with an older couple, perhaps the child’s grandparents. But there were none with a father and none with pictures that looked like a father had been cut out.

Mary Louise and her mother appeared ordinary and happy and harmless. And maybe that alone had been the sole reason for the killer to choose them.

Then something caught Maggie’s eye. On the desk, sticking out of the lopsided pile of mail, was a six-by-nine manila envelope. She could see only the return address but it was enough to draw her attention. It was handwritten in block lettering, all caps, and it looked an awful lot like the lettering on the note she had just seen about an hour ago.

Maggie looked around the room again. Cunningham had already told her they would need to call in the nearest disease control and containment center. That meant Fort Detrick and that meant the Army would be taking over. Most likely they’d seal off the rooms—probably the entire house. Their first priority would be biocontainment and treatment of the occupants. Processing evidence would come later. Would they even know what to look for?

She found a box of large plastic bags with Ziploc seals in a kitchen cabinet. Back in the living room she lifted off the top pile of mail so she wouldn’t have to tug the manila envelope out and risk smearing anything. Then carefully using only her fingertips she picked up the envelope by a corner and dropped it into plastic bags. She sealed it and dropped it into another plastic bag just to be safe.

She told herself she was saving the Army a bit of work. Of course they’d be grateful, but still, she tucked the double-bagged envelope into the back of her trouser’s waistband, letting it lie smoothly against the small of her back. She pulled her shirt and jacket down over it, just in case they weren’t so grateful.