The CW has released the Official Synopsis of The Flash episode “Crisis on Infinite Earths: Part Three” (6.09) that will be aired on Tuesday, December 10 at 08:00-09:00 PM.
OFFICIAL SYNOPSIS
BLACK LIGHTNING JOINS THE ARROWVERSE IN THE THIRD CHAPTER OF THE CROSSOVER
Pariah (Tom Cavanagh) enlists Black Lightning (guest star Cress Williams) to help stop the Anti-Monitor (guest star LaMonica Garrett) after Flash-90 (guest star John Wesley Shipp) shares what he learned from his battle in ‘Elseworlds.’ With the help of Black Lightning, Barry (Grant Gustin), Cisco (Carlos Valdes) and Killer Frost (Danielle Panabaker) come up with a plan that could save them all. Meanwhile, Iris (Candice Patton) has a heart-to-heart with Ryan Choi (guest star Osric Chau), while Oliver (guest star Stephen Amell) and Diggle (guest star David Ramsey) return to an old familiar stomping ground.
“The Flash is starring Grant Gustin as Barry Allen/The Flash, Candice Patton as Iris West-Allen, Danielle Panabaker as Caitlin Snow/Killer Frost, Carlos Valdes as Cisco Ramon/Vibe, Tom Cavanagh as Harrison Wells, Jesse L. Martin as Detective Joe West, Hartley Sawyer as Ralph Dibny/Elongated Man and Danielle Nicolet as Cecile Horton.
In The Flash, Barry Allen was just 11 years old when his mother was killed in a bizarre and terrifying incident and his father was falsely convicted of the murder. With his life changed forever by the tragedy, Barry was taken in and raised by Detective Joe West, the father of Barry’s best friend, Iris. Now, Barry has become a brilliant, driven and endearingly geeky CSI investigator, whose determination to uncover the truth about his mother’s strange death leads him to follow up on every unexplained urban legend and scientific advancement that comes along.
Based on characters appearing in comic books and graphic novels published by DC Comics, THE FLASH is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television.