Two back-to-back weeks of goodness, you'd think that would be a bit of a stretch for the DC shows to all be good, but turns out its not such an alien concept.
Supergirl Season 3 Ep 4 Faithful
The Flash Season 4 Ep4 Elongated Journey Into the Night
Legends of Tomorrow Season 3 Ep4 Phone Home
Arrow Season 6 Ep4 Reversal