Frankenstein's unscrupulous colleague, Dr. Bohmer, plans to transplant Ygor's brain so he can rule the world using the monster's body, but the plan goes sour when he turns malevolent and goes on a rampage.
It is the Christmas Holidays and reformed thief, Boston Blackie goes to Castle Theater to pick up players who will perform for prisoners that are still in prison.
A girl reporter is trying to tack down the lady-in-the-title, as a key witness in a graft trial, which involves three murder and that many failed attempts.
Hoping to increase its box-office allure by adopting the title of a popular song, Deep in the Heart of Texas (clap!clap!clap!clap!) was the first Johnny Mack Brown western of the 1942-43 season.
In this western, a ranch foreman and the bosses son go to a saloon to slake their thirst and find themselves in the midst of a battle started by the feisty saloon owner's wicked ex-husband who loots the safe in the ensuing scuffle.
A counterfeiting gang implicate a bank employee in their crimes, but their cover-story about a ghost in the house where they do their printing backfires on them.