A stand-up comedian wonders who she can trust when she anonymously receives the same token clue, a small white book, that has been found at each scene of a serial murder case. What if having a best friend could put you in the crosshairs of a killer? A psychopath the police have dubbed "Billy Dead Mates" is targeting pairs of best friends, and killing them one by one. Before they die, each victim is given a small white book. For months, detectives...

Struggling comedienne Ruby Bridge confronts the legacy of her mother's abandonment while a secret from the past of Nora Bridge, now a syndicated columnist known for her moral advice, draws the two women together.