Recision is a type of equitable action where a party to a law suit requests that the court relieve them of their obligations under a contract.

Here, the doctor is requesting that the court relieve here from her contractual duty to pay her lover.

The civil procedure section of the disk has a discussion on equitable actions. Basically, equitable actions are actions where the court uses its discretion to determine fairness. This "fairness" type of action should be contrasted with legal actions where the court is bound by the common law.