Perry Mason - Season 3 Episode 2 : The Case of the Watery Witness 1966

Lorna Thomas is a has-been actress who once gave up her baby fof adoption and lived to regret it. George Clark discovers that his wife might be Lorna's long-lost daughter and begins to see dollar signs. The Clarks go to Perry for advice but learn that since Lorna gave up her daughter for adoption she cannot inherit any of her mother's estate. George is devastated over the loss of potential income but he's also under arrest when Lorna is found murdered.