Allison Williams Joins Showtime’s ‘Patrick Melrose’ Miniseries as Guest Star

Benedict Cumberbatch stars in five-episode adaptation of Edward St. Aubyn novels

Allison Williams will guest star in the Showtime limited series “Patrick Melrose,” the network announced on Tuesday.

The “Girls” alum will play will appear as Marianne, an acquaintance that Patrick (Benedict Cumberbatch) encounters during his playboy years in New York. She joins Jennifer Jason Leigh, Hugo Weaving and Anna Madeley in the drama from Showtime and Sky Atlantic.

The five-episode series, which begins shooting in London and the South of France later this month, is based on the series of semi-autobiographical novels by Edward St. Aubyn.

Described as a “gripping and humorous” adaptation, “Patrick Melrose” will devote each episode to one of the five novels, with the series encompassing the saga of the protagonist’s life, from his horribly abusive youth at the hands of his father (Weaving) and the mother who tacitly condones the behavior (Leigh), to the outrageous playboy he becomes and the struggles he endures to defy the damage of his own past.

“One Day” writer David Nicholls will write all five episodes with Edward Berger to direct. Michael Jackson of Two Cities Television and Rachael Horovitz will serve as executive producers on the miniseries, alongside Cumberbatch and Adam Ackland of SunnyMarch.