Universal Murder

Lexi King has switched over to a parallel universe, due to a freak glitch, and finds herself the chief suspect in her husbands' murder. Except she doesn't have a husband, the other version of herself here did. Lexi must eliminate herself from police enquiries, to avoid getting arrested before she can attempt to switch back to her correct universe. She is assisted by Nathan, a hospital porter, who studies the phenomenon of parallel universe travelling. But will they be able to find the killer in time? What if it is Lexi? And will Nathan be able to help Lexi switch back across to her universe?