This 1926 film is one of the first films in the "spooky house" genre. The plot is simple, "The Bat" is a killer who is trying to get a wealthy woman and her niece out of a huge mansion that was left over when a bank president dies. Hidden in the house is $200,000 in cash, and its a race to try and find the money before "The Bat" gets to it.

The film stars are probably not very well known today, Emily Fitzroy plays the wealthy Aunt, always doing her knitting, her companion/housekeeper is played by Louise Fazenda, with over the top/slapstick type of comedy. Jack Pickford plays the newly hired gardner, this is before his wife, actress Olive Thomas died of a drug overdose, and not too long before he himself was the victim of an overdose.

The real "star" of the film is Jewel Carmen. She was married to director Roland West at the time. Years later both West and Carmen, long after they were out of the spotlight both would play roles in one of the biggest of Hollywood mysteries, the death of actress Thelma Todd.

West was a business partner in Thelma Todd's Sidewalk Cafe along the West Coast Highway in Los Angeles. Todd and West were having an affair at the time of her mysterious death.

The coroner set Todd's death at a certain time, but Jewel Carmen, a friend of Todd's testified under oath that she saw Todd out driving in her car with an unidentified man, well after the corner had claimed she was already dead.

Some authors have speculated that Todd, who was found slumped dead behind the wheel of her car in a closed garage; a victim of supposed Carbon Monoxide poisoning, was accidentally killed by West when he locked her out of her apartment.

• For many years this was regarded as a "lost film" with no known prints or elements existing.
• This film was highly regarded for its visuals, especially for its cinematography, elaborate sets and special effects. Roland West could only top it by remaking it four years later as The Bat Whispers (1930) with sound and in an early 70mm process.
• Filming took place almost entirely at night.