santa claus conquers the martians (1964)

aka Santa Claus Defeats the Aliens.
"I told you not to watch those silly earth programmes."
Kimar (Leonard Hicks) a Martian leader is worried about the behaviour of his children, who are obsessed with watching television programmes from Earth. They become listless and he decides to journey to Earth and ends up kidnapping Santa (John Call) to arrange for his children to receive some Christmas presents.
A seasonal delight, if delight comes in a low budget and silly kids movies.

park plaza 605 (1953)

aka Norman Conquest.
"Lock him up."
Nadina Rodin (Eva Bartok) and her henchmen steal some diamonds, and frame Norman Conquest (Tom Conway) for the murder of the courier. When Norman cannot convince detective Williams (Sid James) that he is innocent, his only recourse is to solve the murder himself.
A low budget, but suspenseful drama, interspersed with some comedic moments, and Eva Bartok vamping it up.

colonel march investigates (1955)

aka Colonel March of Scotland Yard
"D-3, known to some as the Department of Queer complaints."
Boris Karloff is Colonel March, the head of Scotland Yards Department 3, which investigates various supernaturally-tinged crimes.
Anthology which combines three episodes of this series, showing Karloff off as a intriguing detective. Though the stories are more crime drama than supernatural thrillers.