
Wheelchair-bound Aunt Carrie is celebrating New Years Eve with her young niece and nephew when she hears gunshots. From her window, she witnesses a murder in an apartment across the courtyard. Carrie and the killer lock eyes, so she knows he's coming for her next. The murderer doesn't realize that, though unable to walk, Aunt Carrie is smarter than he is.
Arthur Randall's marriage has become a sham (and he is in love with his secretary), but his wife doesn't wish to give him a divorce. It is suggested to him that he and his wife go away for a while in an attempt to work things out. She reluctantly agrees, and they go to their cabin by the lake. While they are boating, Arthur's wife falls overboard and drowns. Before she drowns Arthur pulls a ring from her finger- a ring he intends to give to his secretary. Arthur returns home for a while, but is eventually drawn to return to the scene of his crime.
A wealthy woman who's raised a nephew in luxury has tolerated the insolent young man long enough. She informs the ingrate that she's changing her will to remove him as sole heir to her estate. Before she can act, he intends to exploit her heart condition and pin the murder on "the monster", a crazed killer roaming the countryside. Richard doesn't realize that the aunt is already anticipating his scheme.