Mourning the loss of her mother, nine-year-old Cassie Aisling daydreams of the magical, mythical world her mother left unfinished. Then, one day, a troll appears. Then another. And another. Before ...

The mission is a man.

The Odyssey Network, whose owners include Hallmark Entertainment and the Jim Henson Co., chalked up more viewers 18-49 with its first-ever miniseries, “Voyage of the Unicorn,” on March 2 and 3 than ...