The Amber Spyglass

The Amber Spyglass was a planned film adaptation of the book of the same name. It was to be a sequel to The Golden Compass and The Subtle Knife, serving as the third and final installment of a planned film series adaptation of Philip Pullman's His Dark Materials trilogy.

Plot
Lyra is kidnapped by her mother, Mrs. Coulter, an agent of the Magisterium who has learned of the prophecy identifying Lyra as the next Eve. Will, with the help of a local girl named Ama, and some old allies, sets out to rescue Lyra from her mother, who has hidden her from the Magisterium, which has become determined to kill her before she yields to temptation and sin like the original Eve.

Why It Was Cancelled
While The Golden Compass proved a financial hit worldwide, it did not exceed expectations in domestic grosses in the United States.