Where a plaintiff litigates a cause of action against multiple defendants but obtains no substantive relief against some of them, a subsequent proceeding on the same cause of action against those defendants is barred by res judicata or Anshun estoppel. The equitable jurisdiction to grant supplemental relief in the original proceeding (McKenna v Richey) requires 'new facts' — facts occurring after the decree or discovered afterwards — and the impecuniosity of a judgment debtor that was foreseeable and not inquired into may not qualify. The question whether this supplemental jurisdiction extends beyond specific performance cases to cases of rescission remains open.
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