 At Sam's request, they kept their relationship a secret, but it bothered Martin that Sam did not want to be seen with him, and he eventually broke up with her midway through the season.In the season finale, Martin and his partner Danny Taylor were transferring a prisoner to a detention center when they were ambushed.Danny survived with a scratch to the head and PTSD while bullet-riddled Martin endured hours of surgery and weeks of agonizing recovery, leading Danny to feel guilty and act carelessly.