Hourglass by Myra McEntire
Em is more than exasperated when her brother gets another therapist for her. As much as she hates her hallucinations of exploding, dead people, there’s nothing she can do about it – or anyone else! But Michael isn’t like others. He sees the same things she does: Dead people. A Jazz Trio. A carriage. Just like her – because they are both time travellers, the pieces that make up one whole. Together, they can go anywhere. And while the time itself rips apart, Michael needs her help to prevent a murder that has already happened. Because the murderer damages the continuum like nothing else, and he has his sights on Em… Together with her best friend Lily and Michael’s brother-by-choice Kaleb, they have to stop Landers and repair the continuum, before the Power Keepers kill them all. And for that, Hallie and Dune come into play…