The acclaimed NBC time-traveling series Timeless finally gets the sendoff it deserves as the network reveals details behind the upcoming series finale.The sci-fi series writers' room tweeted that principal photography for the two-hour series finale will begin in October to air sometime in December closing out the remaining plot points left unresolved by the Season 2 finale.

RELATED: Time’s Up For Timeless, Which Fails to Find New Home After Cancellation

The network officially signed off on the story for the finale special with series writers Lauren Greer penning the first half and Arika Lisanne Mittman writing the second. The finale will be helmed by longtime series director John Showalter who previously directed four episodes across both seasons of the NBC series.

The network had originally cancelled Timeless in June following the conclusion of its second season leaving fans with a cliffhanger ending that saw fan-favorite character Rufus (Malcom Barrett) killed in action. Following an outpouring of support from fans, the network commissioned a two-hour series finale to definitively end the series last month.

RELATED: Timeless Canceled by NBC For a Second Time

Created by Shawn Ryan and Eric Kripke, Timeless stars Abigail Spencer, Matt Lanter, Malcolm Barrett. and Goran Višnjić. It is expected to return for a two-hour series finale this December on NBC.