The term prisoner's dilemma comes from game theory and is basically the choice faced by each participant. Does one confess and get preferred treatment for themselves at the expense of another? Or, does one remain silent, and hope their counter-part makes the same choice so that each will receive the same benefit or punishment. Each prisoner has the incentive to confess and improve their lot.
PRISONER'S DILEMMA: "Enrique faced the prisoner's dilemma of either confessing or remaining silent and hoping his cohort stood by him and also remained silent."