Prolific Swedish filmmaker Arne Mattson was in his "thriller" mode while filming Det Kom en Gest (aka A Guest is Coming and The Guest Game). It all begins when a family Christmas dinner is interrupted by the unexpected arrival of Essman (Strue Lagerwall). An utter stranger to the family members, Essman has a bizarre and profound effect on subsequent events. Particularly effected is Christina (Gerd Hagman), who is revealed to be certifiably insane. Det Kom en Gest was scripted by Stieg Trenter, one of Sweden's most popular mystery novelists. ~ Hal Erickson, Rovi