Jeff Staron

Phil and Claire had a huge fight and Phil hasn't a clue as to what it was over, so Gloria steps in to counsel Phil and Jay takes Claire. Meanwhile, Jay may have some regret in buying Gloria a karaoke machine, and Cameron is in full prep mode for a huge fundraising event and enlists help from Mitchell and Luke -- which might not be the best choices.

Charlie falls for the woman who replaces Berta on her days off; Alan thinks Lyndsey's ex-husband is stalking him.

Bridget (Judy Greer) reappears in Walden's life as he is trying to impress a new love interest.

A patient's condition leads to a conversation about Alzheimer's disease between Maggie and Richard; Jackson and April try to return to normalcy; Arizona realizes that Callie is moving on; Meredith reveals her fears.

Tori tests herself by performing unusual physical challenges; Andre and Robbie lose a bet to Jade.

Hiro follows Arthur Petrelli into the past to find out what drove him to create Pinehearst; following the arrival of her volatile brother, Meredith watches her new life collapse.