Suffolk cops are offering a reward to find the people responsible for at least 18 stolen cars.
Police say the cars are usually taken after 9 p.m.
According to police, the thieves take newer Mercedes, BMW and Range Rover models from Quogue to East Hampton.
A reward of up to $5,000 is being offered.
Anyone with information is asked to call Suffolk Crime Stoppers at 1-800-220-TIPS.