michael's relationship with sara is featured prominently in the nineteenth episode, "the key", where he fails to steal the key to the infirmary from her. although she finds out about his motive for being in the infirmary in the following episode, sara decides to help michael by leaving the infirmary door unlocked on the night of the escape. towards the end of the season, michael finally succeeds in helping his brother escape from fox river state penitentiary through the window of the infirmary, but also aids the escape of six other prisoners.