Lethe Wharf is a 1939 Australian radio play by Catherine Shepherd.

The radio critic from Wireless Weekly called it "a most unusual play... the playwright presents no ordinary murder mystery.

She tackles a social problem, flings a fierce criticism at a certain class of women, and tells a pitiful story of the fate of the little capitalist.

.” Thus Shaddv to Giles, as they stood on the little wharf facing the dim, mysterious river, while the green light of the boat winked in the shadows—Lethe, River of Forgetfulness.

To tell that, the author must unwind the dark cable of the story that brought their frustrated lives together.