Cat splits up with Glenn; Lola fakes a brain tumour to dump Owen; Blake is a sad clown.

The staff is sympathetic about Lola's fake brain tumour; Glenn is arrested for allegedly trying to give an infant breast implants; Briggs recalls Owen's last day as a cop.

Blake recalls childhood traumas as a competing clown doctor threatens his position; a visiting physician experiences the hospital in a whole new way.

Cat's new love affair blossoms, making Glenn jealous; a visiting neurosurgeon offers to cure the Chief of her myriad ailments.

Glenn gives Cat's new boyfriend an operation; Osama bin Laden gets captured; Blake operates on Lola's non-existent brain tumour.

Cat feels conflicted about her full-term pregnancy because the father (guest star Nick Kroll) is 6 years old and has advanced ageing disease.