Jessica Fletcher takes up the cause of her good friend Barbara Babs Wirth after Babs's husband Hal suffers a fatal heart attack that Jessica has reason to believe was actually murder. Her suspicions are aroused by a sinister dating site Hal used while he and Babs were having marital issues - a site that might be complicit in somehow swindling him out of millions. Jessica's investigation reveals that Hal was far from the only victim, and when his former business partner is also killed, a deadly pattern emerges.

Jessica teams up with a brilliant, young, computer hacker to follow the trail, but as she gets closer to the truth, two near misses force her to realize that she could very well be the next victim. The stakes have never been this high, as Jessica finds herself being stalked by the killer she is trying to catch. She'll need to set the perfect trap to avoid her very own date with murder.