Dragnet (1967)

S2E17 The Big Search

Title: The Great Hunt Plot: Two young sisters, aged three and five, have vanished without a trace. Their mother fears that her estranged husband, a recovering alcoholic, has taken them. However, he is unaware of their location and is committed to his sobriety. As the search appears increasingly bleak, detectives Friday and Gannon receive a tip from an old neighbor and decide to pursue a lead that could change everything.