DC

Gotham "Awakened by a Crash in the Night"

In S3E12 Penguin discovers his dead father in the middle of the night

​Supergirl 

Supergirl Lives Extended Trailer

The Flash

The Flash "Borrowing Problems from the Future" Trailer

The Arrow

​The Arrow "What we Leave Behind"
Legends of Tomorrow

​Legends of Tomorrow " Raiders of the Lost Art" Extended Trailer