You can always expect major drama when Meredith and Lexie's father, Thatcher, drops in on Grey's Anatomy. TV Guide has the latest on his upcoming visit today.

On the February 10 episode, Jeff Perry's character returns with stomach pains. "They suspect he's rejecting the [partial] liver Meredith gave him," Perry reveals.

What causes Lexie the most heartache is seeing her father with his new girlfriend Danielle, a heavily tattooed girl her same age, played by Alexa Havins ...

AWKWARD FAMILY REUNION: Poor Lexie ... for several reasons.

"He met her in AA," explains Jeff, who says he does not know Thatcher's ultimate fate. "They were taken with each other and fell in love, which horrifies Lexie."

Meredith, meanwhile, shrugs off her father's dating escapades.

"She's more bemused," says Jeff. "But keeps a safe distance."

Will Lexie come around on her dad's new girlfriend? Will he live long enough to give her the chance? How do you expect Thatcher's return to play out? Discuss.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.