Credit: Twitter

The cast and crew of Pretty Little Liars having been staying up late to shoot Season 4 night scenes, and it looks like all the long, late nights are starting to drive them a little crazy.

Troian Bellisario posted this Vine, writing simply, "Late night shoots." The tweet may be short and sweet, but the Vine itself ... well, let's just say we hope the cast gets a few solid nights of sleep soon!

The Vine cuts from Lucy Hale (Aria) knocking over a chair, to Ryan Guzman (hot newbie Jake) dropping things, to Lindsey Shaw (Paige) fake-slapping Lucy, to Troian screaming and spraying herself with hairspray, to all four shouting into the camera. As we said a little crazy!

As a side note, we've very curious about this particular combo of actors. Are all four in a scene together? We want to know more about what new character Jake is up to!

Find Pretty Little Liars spoilers here.

Catch the next episode of Pretty Little Liars on Tuesday, June 18, 2013 at 8 p.m. ET/PT on ABC Family.

Source: @SleepintheGardn

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin.