Where Mach deals with his inferiority complex, and the SCU to find the real bomber.
So, the show delves a bit more into the brother-sister dynamic of Go and Kiriko, and consequently Mach gets a (very slight) upgrade to Dead Heat. Nice of Shinnosuke to let Kiriko be the one to sort it out with Go, too. Probably for the better as he was the object of Go's envy after all.
Seriously, everything Mach does is suicidal.
Chase finally gets free from the hospital bed and Mad Doctor (just in time so that Mach can use Mad Doctor). He's still trying to understand why Kiriko went through all that (and accepts the gesture of kindness), but I wonder how it'll change him.
Next episode, Shinnosuke outs himself as Drive and with Chase roaming about, looks like there's going to be a lot going on.