THE DEVIL BAT

Foreword:

"All Heathville loved Dr. Paul Carruthers...the doctor found time to conduct certain private experiments — weird, terrifying experiments."

Dr. Paul Carruthers, a chemist and physician in the small town of Heathville, is offered a $5,000 bonus from his employers for his contributions to the company, a pittance compared to the million dollars in income the company earned from his work. His employers argue that he took a buyout early in the company's history instead of retaining his partnership stake. Embittered and insulted, he seeks revenge and develops a system in which ordinary bats are enlarged to massive size, training them to be drawn to a new, pungent aftershave he is testing. He then distributes the lotion to his enemies as a "test" product.

Once they have applied the lotion, the chemist then releases his Devil Bats in the night, targeting the families of his employer's owners. The bats succeed in attacking and killing the owner's two sons and his partner. A hot shot reporter from the Chicago Register, Johnny Layton, gets assigned by his editor to cover and help solve the murders. He and his bumbling photographer, "One-Shot" McGuire, begin to unwind the mystery.

In the climactic closing scene, Layton dumps a sample of the aftershave on Carruthers, leading the bat to attack and kill its own master. Mary, the last surviving member of her family, runs into Johnny's arms.

In the final confrontation, reporter Johnny Layton pours the aftershave on Dr. Carruthers, causing the giant bat to attack and kill its creator. Mary Heath survives and finds solace with Johnny.

The film’s conclusion brings poetic justice as Dr. Carruthers falls victim to his own creation, underscoring the dangers of unchecked vengeance and hubris. The mad scientist’s demise restores order to Heathville, and the surviving characters are left to rebuild, a classic ending for a creature feature from this era.