Coffin Underground, Gwendoline Butler 
Coffin and the Paper Man, Gwendoline Butler 
The Red Staircase, Gwendoline Butler 
Death Lives Next Door, Gwendoline Butler 
Coffin’s Dark Number, Gwendoline Butler 
Coffin on the Water, Gwendoline Butler 
Coffin on Murder Street, Gwendoline Butler 
The Coffin Tree, Gwendoline Butler 
Cracking Open a Coffin, Gwendoline Butler 
Coffin in the Black Museum, Gwendoline Butler 
Coffin in Fashion, Gwendoline Butler 
A Grave Coffin, Gwendoline Butler 
Coffin’s Ghost, Gwendoline Butler 
Coffin’s Game, Gwendoline Butler 
A Double Coffin, Gwendoline Butler 
A Coffin for Charley, Gwendoline Butler 
A Dark Coffin, Gwendoline Butler 
A Cold Coffin, Gwendoline Butler