Mystery - Omnibus with the complete Heaven Tree Trilogy: The Heaven Tree, The Green Branch and The Scarlet Seed. England in the reign of King John - a time of beauty and squalor, of swift treachery and unswerving loyalty. Against this violent, exciting background the story of Harry Talvace, master mason, unfolds. Pargeter wrote under a number of pseudonyms; it was under the name Ellis Peters that she wrote the highly popular series of Brother Cadfael medieval mysteries, many of which were made into films for television.