Goodnight, Murder — Diane Weiner

Professor Jenna Blake is back. She survived a school shooting. She survived her husband's suicide. With the help of supportive parents, a therapy dog, and Oreos, she's regained her grip on life. Or has she? On her first day back from an extended sabbatical, she finds a cryptic note on her desk requesting a meeting. When the anonymous note writer is a no-show and later turns up dead, it ignites a volatile chain of events. If she can't explain why her scarf, address, and DNA are found on the dead stranger, she'll lose her job and be thrown in jail. When Jenna discovers a second victim murdered in the woods and one of her students goes missing, she rises to the top of the suspect list. Enlisting the help of a hot private investigator, her humorous teaching assistant, and the original victim's fiancé, she fights to uncover the twisted truth.