when the company decided to rescue whistler themselves, michael foils their plans but he was suspected of such an operation. at the end of the episode he is being escorted out of sona and is kept in solitary, being interrogated. he evenly relented and told them about whistler, who then revealed that gretchen morgan is in charge of the operation. later michael finds out the officers that were with gretchen have been killed. michael and whistler are returned to sona. it was then when they turned to a new escape plan, with the help of lechero, and that is through a tunnel.