She was an accomplished health care administrator, a fundraising executive running a multi-million-dollar campaign for one of Maryland's leading health care systems. Her husband was a former mayor. They had raised a happily married daughter. From all appearances, life was rich and fulfilling. Except every night she went home to a dark house where her adolescent son huddled in his cave-like bedroom. Routinely, he disappeared at night while she lay awake, staring at the blinking bedside clock, waiting to hear his footfall on the stairs, just to know that he was safe and still alive. A story...