Six friends reunite in London to celebrate the life of their recently deceased ex-employer, a professor that brought them together in 1999 to help build a dating website based on psychological testing. But what is meant to be a night of bittersweet nostalgia soon becomes a twisted and deadly game when the old friends find themselves held at gunpoint. They are given an ultimatum: reveal their darkest secrets to the group or pick each other off one-by-one. It soon becomes clear that their current predicament is related to their shared past. The love questionnaire they helped develop in 1999 for the dating site was also turned into a tool for weeding out psychopaths: The Wasp Trap. This and the other tragic events of that summer long ago may help reveal the truth behind a killer hiding in plain sight.
