Watch 'Legends of Tomorrow' special preview live: Exclusive Clips, interviews from Flash-Arrow spin-off series

It is in fact DC Week at The CW, with "The Flash" returning after the mid-season hiatus on 19 January, "Arrow" returning on 20 January and DC's "Legends of Tomorrow" premiering on Thursday, 21 January. The CW is tempting viewers by adding one more event -- a 30-minute preview of the upcoming "LoT" series, titled "Their Time Is Now", which will follow "The Flash" Season 2 Episode 10 on Tuesday night.

The preview will feature clips and exclusive interviews of "LoT", "The Flash" and "Arrow" executive producers Greg Berlanti, Marc Guggenheim, Andrew Kreisberg, Phil Klemmer and Wendy Mericle, giving viewers an in-depth understanding of the show.

The show will, hopefully, also give us an idea as to how Vandal Savage returns from his ashes. Fans will remember that he was turned to ashes after the fight in "Legends of Yesterday" ("Arrow" Season 4 Episode 8), and that those ashes were stored in a bottle by Malcolm towards the end of the episode.

Fans will definitely learn more about the time traveller Rip Hunter, and the titular legends, Hawkman, Hawkgirl, Firestorm, White Canary, Captain Cold Heat Wave and The Atom. So, do not forget to watch out for the special preview, which will be aired by The CW at 9 pm (EST) on Tuesday, 19 January. You can also live stream "Their Time Is Now" via The CW Website.

Here is the official synopsis for "Legends of Tomorrow": 

When heroes alone are not enough... the world needs legends. Having seen the future, one he will desperately try to prevent from happening, time-travelling rogue Rip Hunter is tasked with assembling a disparate group of both heroes and villains to confront an unstoppable threat – one in which not only is the planet at stake, but all of time itself. Can this ragtag team defeat an immortal threat unlike anything they have ever known?