The Invisible ones

Small-time private detective Ray Lovell lies delirious in a hospital bed. Before he had the accident that landed him in the hospital, he had been hired to find Rose Janko, the estranged daughter of a traveling Romany family. Because he is half Romany himself, he is aware that he was hired because of that and is surprised at the hostility he has encountered from the Jankos as the case progressed. As he struggles to get better he wonders if they're hiding a terrible secret connected to Rose's disappearance.