NGTV Guide: Thursday, May 13

The chill-inducing Gravedigger goes to trial on tonight’s Bones, Fringe begins a two-parter, Patrick Jane gets a love interest, plus The Vampire Diaries and Supernatural go all out for their season finales. It’s a big night in TV land!

Bones – FOX 8/7c
“The Boy With The Answer” – The trial of The Gravedigger hits close to home for members of the team, and everyone at the Jeffersonian must work overtime to uncover the forensic evidence to elicit a conviction.

The Vampire Diaries – the CW 8/7c – SEASON FINALE
“Founder’s Day” – Founder’s Day has finally arrived, and everyone is busy with last-minute preparations for floats and fireworks. Stefan (Paul Wesley) is uncomfortable with Damon’s (Ian Somerhalder) new attitude toward Elena (Nina Dobrev), but Elena is more concerned about repairing her relationship with Jeremy (Steven R. McQueen). Jeremy is worried about Anna (guest star Malese Jow), but not sure he’s on board with her latest plan for the future. While Caroline (Candice Accola) is enjoying her day as Queen of the celebration, she also tries to help Matt (Zach Roerig) and Tyler (Michael Trevino) get their friendship back on track. Finally, although Damon and Alaric (Matt Davis) do their best to stop him, Johnathan Gilbert (guest star David Anders) sets a plan in motion that brings Founder’s Day to an end amid chaos, destruction and death.

Fringe – FOX 9/8c
“Over There – Part 1” – In part one of the two-part, two-night second season finale, Walter and Olivia travel to the parallel universe, and the anticipated face-off between Walter Bishop and William Bell occurs when special guest star Leonard Nimoy returns.

Supernatural – the CW 9/8c – SEASON FINALE
“Swan Song” – The entire season has been leading up to this showdown between good and evil. With the Apocalypse looming, Sam (Jared Padalecki) and Dean (Jensen Ackles) realize they are out of options and make heart-breaking decisions that will change their lives forever. A beloved character is killed.

The Mentalist – CBS 10/9c
“Red Letter” – Romantic sparks begin to fly when Patrick Jane and supposed psychic Kristina Frye cross paths again during the CBI investigation into the murder of a charismatic head of a non-profit organization that fights human trafficking. Leslie Hope (“24”) returns as Kristina Frye.