The Flash - 'Rogue Time' and 'Tricksters'

"So, you teleport and read minds?"
"No, they cancelled that series. I have a gilt complex."

Having traveled back in time, Barry is cautioned not to change anything, but unable to let Joe and the Captain be hurt he instead nabs Mark Mardon and drops him right in the pipeline. This leaves the stage clear for Leonard Snart, Mick Rory and Snart's sister Lisa (former Tomorrow Person Peyton List) to make a move on the criminal underworld of Central City. To do this, they kidnap Cisco to build them new guns, and to find out who the Flash really is.

'Rogue Time' is essentially a do-over of the Flash's day from 'Out of Time', and establishes a principle that that which you avert will be replaced. Mardon's former victims are unharmed, but the 'Rogues's Gallery' is an active threat, and one that Barry can't directly combat given the threat to his secret identity. In addition, he loses the one thing he's always wanted, as Iris dismisses his renewed declaration of love and Eddie punches him in the face for his trouble. Dr Wells suggests that Iris needed the pressure of an impending crisis to face her feelings, although given that Barry broke up with Lisa Park before his heart to heart with Iris, the unfortunate implication is that she only likes him when he might be happy with someone else.

"It's okay; I told them you were crazy."

On a personal note, after Caitlin explains to Eddie and Iris that Barry is suffering from 'lightning psychosis' there's this little bit where she takes his arm as they're walking away  and they share a little smile and it is hotter than all his scenes with Iris combined. Meanwhile, Candice Patton and Rick Cosnett as Iris and Eddie are not without chemistry. Why are The Flash and Arrow so gripless at romance? Are they doing this on purpose to stimulate discussion? Am I enabling here?

Cisco is forced to reveal Barry's identity when his brother's life is threatened. It's a critical moment for Cisco, protecting a sibling he actually doesn't like much at a risk to his adopted family. Afterwards, he offers to leave Team Flash, but Wells has a heart to heart with him that mirrors their confrontation in the last episode, but warming the cockles of the heart instead of vibrating them to pieces. To prove he isn't getting soft, he then murders Iris's boss who had evidence on him, which however serves to spike Barry's suspicions.

In a final twist, Barry makes a deal with Snart: In return for keeping his secret, he won't take down the Rogues Gallery (his name for them), but only so long as they steal without killing and stay the hell away from his peeps.

James Jesse eschews a mask, probably so that we can all see that he is Mark
Hamill.

In 'Tricksters' a copycat bomber is stealing the schtick of long-term Iron Heights resident James Jesse, culminating in a jail break and a confrontation at a political rally.

Interesting points in the A plot include Mark Hamill reprising the role of James 'Trickster' Jesse from an older Flash TV series - and impressively keeping the performance very separate from his defining performance as the DC Animated/Arkham series incarnation of the Joker - and the Flash committing multiple acts of technical assault on a crowd of wealthy dignitaries by injecting them with the antidote to their poisoned champagne.

More interesting is the B plot, which grabs both the cold open and the stinger to reveal more about the Reverse-Flash and the fate of Harrison Wells. This includes a replay of the death of Nora Allen featuring the first full-on, near-equal clash between the two speedsters that we've seen (previously Barry has been owned by the man in yellow.) This ties in to Barry's growing suspicions, which are cemented when Wells talks him through the process of vibrating his molecules to phase through a solid object. Barry, Joe and now Eddie are convinced that Harrison Wells is the villain, just as we the audience find out that he isn't.

Oh, and that particular trio also conspire to keep Iris from looking into her boss's murder in an act of misguided protectiveness that can not possibly fail to backfire.