Opportunity Knocks (1990)

Eddie, an inner-city con man with a gift for mimicry, gets in hot water with a gangster and has to find a place to hide out quick. He breaks into a palatial suburban home while the owners are away and dupes everyone into thinking he's the housesitter. Posing as a successful businessman, he wins the respect of the owners' family and the heart of their attractive daughter. As Eddie and his partner attempt to get the vengeful gangster off their backs by besting him in a complicated sting, Eddie wrestles with the biggest problem of all: finding a way to reveal his true identity to the girl without losing her love.