A.J. Tannen

Believing she's on a winning streak after undergoing a successful kidney transplant, Susan begins to think she's invincible and starts to gamble with the little money she and Mike have - convinced she can't lose.

When Nick freaks out after Reagan lands him a book signing, Jess scrambles to boost his confidence and help the event go smoothly.

After the terrorist attack, the NCIS team are shocked and are trying to cope with Kate's sudden death. Now, their mission is to collect all the possible info on Ari and find a way to stop him before he does any more damage.

While selling a house, Jessica becomes superstitious. A new school counsellor encourages Eddie to run for school president.

Neal's gravely ill mother, Asra, exhibits mysterious symptoms that prompt a quarantine in Trauma One; Neal and his father -- a neurosurgeon -- cannot agree on medical treatment for Asra.

Dre tries to do everything right and keep the peace so that he and Rainbow can avoid their usual quarrel on their annual Valentine's Day date. Diane's siblings try to teach her to give compliments rather than being critical.