Silicon Valley

Richard struggles to embrace Pied Piper's new video-chat app and Erlich faces resistance from Big Head's dad.

[HBO] HD. 'Terms of Service.' (Season Four) Dinesh and Richard butt heads over PiperChat; Erlich's interest is piqued by Jian-Yang's new app.

Richard works tirelessly on his next big idea, Monica sets a trap and Dinesh goes on a date while Big Head heads back to school.

Richard's new alliance worries Jared, Gilfoyle considers whether to put his pride aside and Erlich confronts Jian-Yang about his app.

Richard deals with an unexpected interloper, Dinesh searches for a way out and Monica considers her options.

Richard looks outside the tech bubble for support and Erlich searches for a new endeavor.

Richard takes on a patent troll, Gilfoyle battles a smart fridge while Jared embraces multiple identities and Erlich tries to hang with a new crowd.

[HBO] HD. 'The Keenan Vortex.' (Season Four) Richard ponders a deal with the tech world's latest 'it' boy; Jack faces setbacks.

The Pied Piper guys try to pull off a stealth plan at Hooli-Con and Erlich takes a trip to get his mojo back.

[HBO] HD. 'Server Error.' Season Four Finale. Richard finds himself in a web of lies; Jared plans his exit; Jack bets big; Gavin plots a comeback.