"Suspicious Customers") is a 2011 South Korean comedy-drama film.

Baseball player-turned-insurance salesman Byung-woo (Ryoo Seung-bum) is seen as the cocky ace of his company until one of his clients commits suicide.

The police suspect him of aiding and abetting the suicide, which almost jeopardizes Byung-woo's career.

Anxious to ensure it won't happen again, he gets in touch with his previous clients.

During his quest to turn their lives around for the better, Byung-woo reunites with a lonely husband (Park Chul-min), a debt-ridden lounge singer (Younha), a homeless young man (Im Joo-hwan), and a widowed mother (Jung Sun-kyung).