Terrence Thirteen is a chemist living in Gotham City who also investigates the supernatural wishing to expose those that prey on the ignorant using tricks and science. When a thief known as The Haunted Highwayman begins attacking coaches, the police come to him for help. Dr. 13 deduces the Highwayman is a skilled scientist, who turns out to be a rogue professor Jonathan Rood, fired from his university after he had been attempting to find a cure for his sick wife.
Dr. 13 tracks him to his home in Slaughter Swamp, the in the struggle to apprehend him, a stray bullet kills Rood's mother. Rood then proclaims a curse on the Thirteen family before he hangs in his public execution.
Terrence Thirteen was created by
along with artist
. First appearing in a backup story in
#11 in October 2012.