Just being screened in Canada. Based on the first two episodes, here's my reaction.

Low key compared to the Harry Potter films. This is not an action show.

The witches (and other creatures) live as ordinary people. A historian (Teresa Palmer) makes the frightening discovery that a magical book has adopted her.

A handsome vampire professor (Matthew Goode) becomes her love interest, while other players zero in on her.

The initial episodes have a great deal of tension but very little content. Palmer plays her role competently, but lack charisma. Goode is suitably lean, intense and sinister.

Fortunately, the author of the book (Deborah Harkness) is the executive producer and an actual history professor. So, there are hopes for the show's literacy and intelligence.