The Mediator (Shadowland - Ninth Key)

Ghosts ruin everything, especially your love life. Suze is a mediator - a liaison between the living and the dead. In other words, she sees dead people. And they won't leave her alone until she helps them resolve their unfinished business on earth. But after a cross-country move to sunny California, Suze is looking forward to a fresh start and a life free of spectral interventions. Too bad Suze can't escape the undead that easily. She might not mind Jesse, the sexy ghost who haunts her bedroom, but there are plenty of other poltergeists out there with less friendly intentions. Some of them are out for revenge . . . of the murderous kind. And Suze might be the only one who can stop them.