The Flash is about to return to the scene of the crime.
During Tuesday’s episode, viewers will get a new glimpse at the particle accelerator explosion that turned Barry Allen (Grant Gustin) into the fastest man alive. This time, we’ll see it from a different perspective via those working at S.T.A.R. Labs, a.k.a. Ground Zero. But Barry certainly wasn’t the only one affected by the incident, as Caitlin Snow (Danielle Panabaker) lost her fiance Ronnie Raymond (Robbie Amell) as a result.