Once Upon a Time Season 6 Episode 4 was titled "Strange Case."
Scroll down to read a summary of events from the installment...
On this episode, The Evil Queen worked with Hyde against Jekyll. On what, exactly?
Meanwhile, in the past, Rumplestiltskin helped Jekyll complete the serum.
Also this week, Mary Margaret got ready to return to teaching, while Hook attempted to protect Belle from Gold.
Go ahead and use the video featured above to watch Once Upon a Time online and find out what else transpired now.