J.j. Corsini

Rob starts acting erratically so the sisters have no choice but to confront him. Khloé gets a DNA test to determine whether or not she's adopted.

Kourtney ends her relationship with Scott after he gets violently drunk on Kim's birthday in Las Vegas. On top of the world, Kim takes on more work than she should.

After fainting from exhaustion, Kim learns to manage her professional life. Elsewhere, Kourt takes Scott back and gives birth to their baby son, Mason.

Kourt poses an ultimatum to Scott when he fails to take her pregnancy seriously. Bruce stands up to Kris and demands fiscal independence when she confiscates his ATM card.