In Paris, in his own home, an English diplomat was killed. The little boy, the son of a diplomat, and Deborah, his young governess, saw the murderer. It is this circumstance that forces the girl to hide the child and hastily flee Paris. The friend of the deceased, Lord Gray Kendal, is trying to find the killer. But in vain Kendal counts on the help of the young governess - her behavior is inexplicable and mysterious. A joint search for truth brings the young aristocrat and the girl closer together, and their mutual mistrust gradually dissipates. Lord Kendal realizes that he is recklessly infatuated with Deborah...