Blue Bloods Season 12 Episode 18 – Long Lost – A local celebrity asks Frank to make an exception to the NYPD age limit; an encounter with an old rival leads Erin to look into an alleged wrongful conviction; Jamie is torn over whether to report a sergeant; Danny and Baez look for an abducted kid. – Stream Blue Bloods Season 12 Episode 18 Online for Free – Watch Blue Bloods Season 12 Full Episode 18 Free – OnionPlay Official