Morgan le Fay has promised to make Jack and Annie masters of the tree house if

they can solve four riddles. In Ghost Town at Sundown, the Magic Tree

House whisks Jack and Annie back to a ghost town in the Wild West of the 1880s.

There, they meet a mustang herder named Slim as they search for the answer to

the second riddle.

Out of the blue

my lonely voice

calls out to you

what am I?Am I?

The answer is Ghost

  • They tried to save a mustang from rustlers.
  • Slim's horse is Dusty