The next episode of "The Flash" won't be out until next month but The CW sure knows how to tease fans. As it turns out, the murderer of Barry's mom who he has been looking for all is life has already come face to face with him countless times.

Big revelations are coming as the man Star Labs team trusted, the one who Barry saw as a kind-hearted friend, is not as he claims to be. In the episode "Out of Time," the true identity of Dr. Harrison Wells as well as his darkest of plans and crimes will soon be uncovered. 

As expected, the Star Labs team itself does not believe that the doctor has something to do with the killing of Barry's mom. On the night of the murder, Joe West and Cisco finally figured out that an adult Barry was in the crime scene, as shown in the latest episode. However, Reverse Flash remains to be a mystery. 

In the promo for the episode, Cisco himself cannot believe his discovery of Dr. Wells' murky plans as he cannot believe what his eyes are seeing. Before the first season of "The Flash" ends, it is promised that Dr. Wells' "endgame will happen." 

"Wells has a definitive plan. When you look back, you'll see he's had a definitive reason for doing all the things that he's done throughout the course of the season. We think it makes sense. Hopefully, you all will, too," executive producer Andrew Kreisberg told TV Line. 

Meanwhile, The Flash will also have to deal with a duo in episode 15. The synopsis for "Out of Time" reveals that sibling evils Clyde and Mark Mardon will be Barry's business in the next installment. The former sibling, who will be played by Chad Rook, is the met-human that manipulates the power of a tornado as seen in the season's premiere. The latter, who Liam McIntyre will give life to, is a weather wizard. 

"The Flash" episode 15 "Out of Time" will air on March 17.