DC Comics - The Demon's Lover Series

Book and Bell
[Bruce, Dick/Jason] Batman is out of town when Jason Blood comes a-callin', leaving Nightwing to fill in.

Flesh and Blood
[Dick/Jason, Bruce, Tim] Jason and Dick get to know each other a lot better, and Bruce comes home.

Fire and Brimstone
[Dick/Jason, Bruce, Tim, Alfred, Barbara, Leslie] Nightwing encounters Etrigan.