Jonah preps for a Hollywood soiree. David, on the other hand, is busy moping about his sudden break-up with Lauren. Ella insists the party is the perfect setting to pry the truth out of her.

Riley and Lauren plan a day out on 3rd St. until Drew drops by to return Riley's underwear. Embarassing!

Drew asks Riley on a pseudo-date: buying toys for the kids in the hospital's pediatric ward.

Amanda is reunited with Jane (guest star Josie Bissett), this time talking about Ella getting her due.

Ella deals with a crisis at WPK, an error in billing that has Amanda threatening to get to the bottom of it.

At the hospital, Dr. Mancini calls Lauren in for a consult. A "consult."

Riley and Drew connect at a toy fair.

Amanda is desperate to find that painting with Sydney's mystery message, and concocts a mysterious plan to get the tenants to talk.

Ella arrives at a photo shoot where Jo (guest star Daphne Zuniga) is busy snapping away. Jo tells her account rep that Ella actually underpaid her $200,000.

At Coal, Morgangives David a stolen watch as a gift. David tells her he doesn't want to see her again, but not so fast, her dad's a dangerous guy.

At Jonah's party, Ella is catching on to Amanda's plan to oust her. Ah, but she's not the only one having a bad day.

Lauren complains about Dr. Mancini imposing his crazy work schedule on her, but like always, alcohol cures all.

It's a quick buzz because Dr. Mancini gives Lauren a booty call.

Riley and Drew are on a faux date and they are cute together.

Cue the awkward moment between Jonah/Ella and Drew/Riley.

Amanda catches up to Dr. Mancini, interrogating him about his presence and of course, he lies. And it's Jane, making her presence known, seeing her ex-husband for the first time in years. Time has been good for the both of them.

Amanda asks Ella about the account that had that "clerical error," and Ella lays it all out for her boss like loyal employee she is. Someone's embezzling money.

Meanwhile, Drew and Riley play beer pong.

Jonah comes strolling in wanting to school Drew.

While Jonah is grabbing something from one of the drawers at his apartment, he catches Riley and Drew making out.

David and Morgan continue their tryst, and she eyes the large painting on the wall. Amanda interrupts, telling him what's up with Sydney's paintings before she died, leading her to Auggie.

Jo is "mini-reunited" with Amanda, Michael and Jane. But it's not really a reunion as Jo seems to think it's Amanda embezzling money out of her own company, if history serves right.

Cue the night's second awkward moment, Drew makes a low blow to Jonah about deadbolting Riley's front door. Of course, that isn't acceptable to Jonah.

Jonah drunk-defends his actions and Drew bluntly tells Jonah to lay off Riley because "she's not your girlfriend anymore!"

The two get into a pool fight - over Riley.

Dr. Mancini stands outside Lauren's front door as he tries to worm his way into her apartment to get that transaction he paid for two episodes ago.

Lauren's desire to protect her medical career makes her do something incredibly ballsy. She reveals to her friends she was a prostitute.

The morning after, the residents are recuperating from their massive hangovers and Lauren's unfortunate revelation. Lauren and David try to patch their relationship, while Jonah acts as the resident janitor, and Riley schools him for acting like a jerk.

At the hospital, Drew goes into the "morgue," and uncovers one of the bodies, cutting into the guy's chest with a scalpel.

Amanda suggests it's Ella who is the company's embezzler, but Ella is onto Amanda.