The United States Court of Appeals for the Third Circuit has held that an unconsummated plea agreement cannot be enforced absent detrimental reliance.
Virgin Islands v. Scotland, 614 F.2d 360 (3d Cir. 1980).
Scott W. Reid,
Criminal Proceedings - Plea Bargaining,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol19/iss2/11