Arrow
Damien Darhk gives Oliver an ultimatum. He drops out of the mayor’s race and Darhk will return his son. He doesn’t and Darhk will make sure he never sees his son again. Felicity is angry because everyone else knew about William but her. The team combs the city trying to find Darhk. Oliver approaches a friend who turns out to be Vixen to help them find Darhk because he’s using magic to cloak his whereabouts. Vixen destroys the totem that Darhk uses to gain his magical abilities. Oliver creates a message for William to watch when he’s older because he wants William to understand why he’s not in his life.
Supernatural
Dean and Sam relive their favorite childhood memories when they get to meet some of their favorite wrestlers at a wrestling event. Castiel/Lucifer pays a visit to Crowley. Crowley makes a move against Castiel/Lucifer. Dean and Sam find out a crossroads demon is pulling the strings of one of the wrestlers behind the scenes after another wrestler is found dead. They deal with the demon and have a talk as they head back to the bunker.
The Originals
It is crossover night for The Vampire Diaries and The Originals. Klaus makes an appearance in Diaries as Stefan shows up in New Orleans looking for help with a situation he’s found himself in. Klaus takes him to Freya who might be able to help him. Aya and a witch subdue Klaus and Elijah. Lucien is back as well. Strix from all over the world are heading to New Orleans. Aurora and Tristan think they have the upper hand on Klaus and Elijah as they wait for Davina to perform the ritual that will sever the bloodlines to the vampires that Klaus and Elijah have sired. Freya uses Lucien to create a link to Klaus and Elijah to save them. Hayley kills Aya to get her revenge for what happened to Jackson.
Like the quick re-cap! Thx for keeping us informed and up to date.