Twinned Universes - Catalyst Chronicles, #2

Aspiring actor Paul Harrison is devastated when his mother dies under suspicious circumstances. However, he's the only one who believes his great-uncle was involved. Determined to learn the truth, Paul concocts a wild plan to trick a confession out of Great-Uncle Jack by impersonating their legendary ancestor Sean Lyon. Good thing Paul is Sean's clone. To perfect his act, Paul needs to travel to an alternate universe where Sean is still alive—but due to be murdered soon. If Paul is to achieve justice for all, he must risk not only his own life, but the wormhole connecting Sean's universe to his own.