The Blue Moth (1959)

"The Blue Moth" is a 1959 Drama movie directed by Wolfgang Schleif and starring by Zarah Leander, Christian Wolff. Julia Martens is a wrongly convicted murderess who is released from prison after thirteen years. She begins a new career as a chanson singer and her now grown-up son, who has been told that his mother is dead, has no idea who Julia Martens really is. One day he is suspected of murder and Julia intervenes.