Circus of the Darned (Ben and Fran, #2)

Fran, who has psychic abilities and travels throughout Europe with her mother and circus friends, is looking forward to her first date with Ben, a vampire who insists she is his Beloved. Their first date is interrupted however when Ben not only goes missing, but Fran unwittingly summons a band of Viking ghosts who love to pillage and think she's a goddess needing help battling the god Loki.