A stranger groped a Queens woman after pretending to be in a bike accident — then showed up hours later inside her apartment, where she awoke to find him standing over her bed, police said Thursday.

The man first approached the 26-year old around 2:50 a.m. Saturday in the area of 24th Street and 23rd Avenue in Long Island City, asking for medical help after claiming he was involved in a bicycle accident.

But police sources believe it was a ruse — the creep then fondled the woman’s breasts, prompting her to flee into her nearby home.

Hours later, around 4:30 p.m., the woman awoke to find the stranger in her apartment, standing over her, cops said.

She screamed, prompting the man to rush out of the apartment through a second-floor window, police said. The woman was not hurt and nothing was stolen.

Police provided a detailed sketch of their suspect, whom they described as approximately 30 years old, 5 feet 8 inches tall and 180 pounds, with short, dark, close-cut hair.