The Flash
S:6 E: 9 "Crisis on Infinite Earths (3)"
Silicon Valley
S:6 E: 7 "Episode 7"
Silicon Valley goes big and goes home in a dark, funny, wistful series finale
By Les Chappell on TV Club, shared by Les Chappell to The A.V. Club
Supergirl
S:5 E: 9 "Crisis on Infinite Earths (1)"
Arrow
S:8 E: 7 "Purgatory"
Arrow Recap: Island, Get Away! — Did Oliver Say His Goodbyes in Fall Finale?
By Matt Webb Mitovich
Arrow’s not over yet, but says its goodbyes in “Purgatory”
By Allison Shoemaker on TV Club, shared by Allison Shoemaker to The A.V. Club