Penn Badgley & Shay Mitchell Promote 'You' at Upfront Event!

Penn Badgley, Elizabeth Lail, Shay Mitchell, and John Stamos pose for photos at the 2018 A+E Networks Upfront on Thursday (March 15) in New York City.

The actors were at the event to promote their upcoming Lifetime series You, which was just given a premiere date of September 9.

You is a 21st century love story that asks, “What would you do for love?” When a brilliant bookstore manager crosses paths with an aspiring writer, his answer becomes clear: anything. Using the internet and social media as his tools to gather the most intimate of details and get close to her, a charming and awkward crush quickly becomes obsession as he quietly and strategically removes every obstacle – and person – in his way.

The show is the latest series from Greg Berlanti!