Source: Yahoo! TV [follow link for complete column]
YAHOO! TV - Weekend Picks - What to Watch This Weekend
A list of can't-miss hot shows, undiscovered gems and fan favorites airing this Friday, Saturday and Sunday
Season Premiere: Friday at 10pm on Syfy
Syfy's smart supernatural drama launches its fourth season this week, and things have changed: Refugees from Hollow Earth are upsetting the delicate balance between humans and Abnormals, leaving Dr. Magnus and her team to keep the peace. The premiere finds Magnus traveling back in time to 19th-century London to prevent disaster in the present.