He took over the artwork with Strange Adventures #206 and illustrated the stories and covers for eleven issues, also taking over the scriptwriting with issue 212.
Adams also briefly drew (and even more briefly wrote) The Spectre in 1968.
After producing a few covers featuring Superman and Batman for Action Comics, Lois Lane and The Brave and the Bold, Adams produced his first team-up story, "The Superman-Batman Revenge Squads" for World's Finest Comics in 1968.
However, it was with the supernatural hero Deadman that Adams found his first real success.
Adams and O' Neil gave Gotham back its brooding hero and reestablished characters like The Joker as a homicidal maniac rather than the prancing buffoonery of the ABC TV show.