Billy Wilder Series! RT 100% 

…amateur inventor and professional heel Leonard Vale (Tyrone Power) is accused of murdering an older woman with whom he had been keeping company. The crafty barrister Sir Wilfrid Robarts (Charles Laughton) believes he’s innocent and takes the case, but his defense gets more complicated when Vale’s only alibi, his wife Christine (Marlene Dietrich), proves to be a most unusual witness…-Film Frenzy

“Marlene Dietrich, Billy Wilder, Agatha Christie: What’s not to like?”-Nitrate Online