Serangoon Road: Season 1, Episode 1

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When recently-widowed Patricia Cheng decides to keep her late husband's detective agency open, she asks Australian-born neighbor and friend Sam Callaghan, who aided her husband with investigations in the past, to help her work a new case. The American CIA has hired the agency to locate a U.S. Navy sailor accused of stabbing his shipmate while they were on shore leave. As his search progresses, Sam begins to question the sailor's guilt.