Adapted from Deborah Harkness' All Souls trilogy, the 10-part second season finds Matthew (Matthew Goode) and Diana (Teresa Palmer) hiding in time in the fascinating and treacherous world of Elizabethan London - here they must find a powerful witch teacher to help Diana control her magic and search for the elusive Book of Life.
In Elizabethan London, Matthew and Diana's romance faces a barrage of new threats. Diana's unleashed magic takes a dark and frightening turn, while Matthew struggles to re-inhabit the dangerous life he led over four centuries ago. They must overcome deep personal fears and jealousies, baring their darkest secrets to one another if they are to stay alive, stay together and find a way back to present day.
While Matthew and Diana hide out in Elizabethan London, back in present day, Diana's beloved aunts, Sarah (Alex Kingston) and Em (Valarie Pettiford), must take shelter with notorious witch hunter Ysabeau de Clermont (Lindsay Duncan) at her ancestral home, Sept-Tours. Meanwhile, in Oxford, Marcus (Edward Bluemel) and Miriam (Aiysha Hart) take on Matthew's mantle to protect daemons Nathaniel (Daniel Ezra) and Sophie (Aisling Loftus), whose pregnancy is advancing. And Gerbert (Trevor Eve), Knox (Owen Teale), Satu (Malin Buska) and Domenico (Gregg Chillin) are determined to hunt down every clue they can to Diana's and Matthew's disappearance, and the secrets their allies are keeping from them.
