Lydia Swann's life is falling into place perfectly. She’s clinched the coveted role of advice columnist at The Washington Post. With her career on the rise, she hopes to buy a house with her girlfriend.

But the bliss is fleeting. The relationship with her girlfriend hits the rocks, leaving Lydia reeling. To compound matters, she becomes entangled in a perplexing mystery. Letters from a disgruntled reader start to flood her inbox. They contain cryptic riddles that bear chilling parallels to a series of unsolved murders haunting DC. Could deciphering the enigmatic riddles lead her to unmasking a killer?

Caught between personal turmoil and the allure of solving a deadly puzzle, Lydia finds solace in the company of Sofia Soto, a captivating figure who sparks feelings beyond mere friendship.