In their magic tree house, Jack and Annie are again transported to King Arthur’s realm,
where invisible beings, giant ravens, and mistaken magic spells have a duke’s castle in an
uproar on Halloween night.
— based on fandom.com
DEBUT
Haunted Castle on Hallow's Eve (Random House, June 2003) [print ·
e-book].
VARIANTS
Debut. Haunted Castle on Hallow's Eve (Random House, June 2003) [print · e-book].
Middle Ages (AD 476 to 1454): Even though it has magic, we take Camelot to be in the real middle ages, but we also mark it as being debatable time travel.
From the magic tree house in Frog Creek, Pennsylvania, circa 2019 ⋙ to Camelot at an unknown time. Round trip. Note: We don't know whether this is the Camelot in our timeline.