A shocking episode uses an old sci-fi trope to pull out all the stops, but to great effect.

PaleyFest video interview with Candice Patton of The CW's Flash TV series.

The conclusion of the Firestorm two-parter is a tightly-plotted ride, though often lacking the emotional resonance of previous weeks.

Firestorm stands out as a tragic tale in a highly emotional set-up episode with huge, revelatory concepts.

A scattered episode doesn't work as a whole, but has a slew of entertaining individual stories and developments.

A great villain and significant development on the Dr. Wells mystery furthers this season's surprising success.

The Flash returns with an impressively well-structured and unendingly fun episode, dialing back the drama for an old-fashioned comic book villain team-up.

The midseason finale adeptly ties in all the story threads into one thrilling, emotional hour that poses more questions than it answers.

The first part in the crossover event strikes a smart balance between fanservice and storytelling, in a fun, even if unambitious hour that lives up to the hype.

An incredibly fast-paced installment uses a common superhero trope to amp up the stakes and tension to great effect.