Tower (Tower #5)

Casandra, Kimi, and Mac were thrust into a brutal (and seemingly virtual) world where they must compete in a dangerous video game-style competition, and now the last remaining challengers face each other in a final showdown! After a split, Cas, Kimi, and Mac are reunited, but can they find a way to trust each other again? It's the final push to the end; who will claim victory at the top of the Tower?