What evidence does Cheever use to arrest Elizabeth Proctor? Explain the evidence and Abigail's involvement.

The evidence that Ezekiel Cheever uses to justify the arrest of Elizabeth Proctor is the doll that he finds at her house.

When he finds the doll, he also finds that there is a long needle stuck into its stomach.  This needle is important because Abigail has accused Elizabeth Proctor's spirit of stabbing her while she ate at Parris' house.

When Elizabeth is taken away, John Proctor asks Mary Warren to admit to the fact that it was she who made the doll.  She refuses, telling Proctor that if she does, Abigail will reveal their adulterous affair.