2021/038: The Traitor's Sword -- Amanda Hemingway

2021/038: The Traitor's Sword -- Amanda Hemingway

Children had wandered into the past and explored the dimensions of magic since the days of E. Nesbitt and Puck of Pook’s Hill, or so Annie reasoned: it was a vital part of their experience. [loc. 3037]

Second in the trilogy that began with The Greenstone Grail. As well as his trips to Eos, the city at the end of time, Nathan is now visiting a desolate medieval castle in his dreams, trying to acquire the Traitor's Sword( no spoilers )