After taking down the man responsible for his best friend’s death, Stuart Ramey thinks the case is finally closed. That is, until Stu finds himself left with a multimillion dollar fortune in Bitcoin in a desperate bid by Frigg, a rogue A.I. program created by the killer, to keep itself from being fully deactivated. To sort out his situation and take Frigg down for good, Stu enlists the help of Ali Reynolds and the rest of his cyber security colleagues at High Noon Enterprises. But they are not the only ones who know about Frigg’s existence. Graciella Miramar is the right-hand woman to El Pescado, the leader of a dangerous drug cartel, and she’ll do anything to get her hands on that program.

Roger McGeary, a brilliant software engineer, has gifted himself with an upscale cruise in honor of his 40th birthday. When he falls to his death from the balcony of his stateroom suite, the incident is quickly declared a suicide. Only his maiden aunt, a tough-as-nails woman who runs a race horse refuge, refuses to take “case closed” for an answer and turns to Ali Reynolds at High Noon Enterprises to look into the situation.