Books in the Divided series

Identical twins Aaron and Branson Kovak are in their final year of college-Aaron's in Ohio, while Branson remains in their home state of Wyoming. There's also the third twin, David, who only exists in one of their minds.Despite the distance between them, Aaron and Branson are united by a turbulent childhood they survived together. As they enter adulthood, David comes out of the shadows to wreak havoc on the real world-his idea of fun.When their mom is diagnosed with cancer, the ties that bind the twins incite David to tear them apart at the seams.Will they stand or fall together, or separately?