"Blue Bloods" starring Bridget Moynahan (Erin Reagan), Steve Schirripa (Anthony Abetemarco), Will Estes (Jamie Reagan), Donnie Wahlberg (Danny Reagan) and Tom Selleck (Frank Reagan) will have an upcoming episode titled "The Thin Blue Line." It will feature Danny being targeted by a Mexican drug cartel for revenge.

Spoiler alert: This update contains more 'Blue Bloods' spoilers. Read on at your own risk.

"Blue Bloods" Season 7 episode 22 "The Thin Blue Line" will show Danny intercepting a several million-dollar shipment headed to a Mexican drug cartel, according to a CBS press release. In doing so, he becomes a target of their revenge. Additionally, a serial killer who preys on elderly people will try to be tracked down by Jamie (Will Estes) who will be working independently. Meanwhile, Mayor Poole (David Ramsey) confides to Frank that he is planning to retire soon.

'The Thin Blue Line' guest stars

Guest stars of the "The Thin Blue Line" episode include Tamara Tunie (Monica Graham), Luna Lauren Vélez (Veronica Molina), Marco Torriani (Alex), Buzz Roddy (Superintendent) and Racine Russell (Officer Cosgrove). Anthony Ruivivar (Det Tommy Jordan), Rory Duffy (Fireman), Alejandro Hernandez (Jose Pena), Franco Gonzalez (Carlos) and Harrison Chad (Evan Fleming) will also be appearing in this episode. David Barrett directed "The Thin Blue Line" while Ian Biederman wrote it.

'Blue Bloods' episodes 2017

"The Thin Blue Line" follows the episode titled "Foreign Interference," which airs on April 28. It features a dangerous Russian man who has been able to enter the US using a diplomatic visa, which resulted in Danny and Baez (Marisa Ramirez) teaming up with two Russian operatives to find him. Other episodes that came before this are "A Deep Blue Goodbye," "Love Lost" and "No Retreat No Surrender."

'Blue Bloods' cast 2017

The 22nd episode of the CBS police procedural drama will also feature the other "Blue Bloods" cast members such as Vanessa Ray (Officer Eddie Janko), Amy Carlson (Linda Reagan), Len Cariou (Henry Reagan) and Sami Gayle (Nicky Reagan-Boyle). Watch out for scenes featuring the show's recurring cast members including Gregory Jbara (Garrett Moore), David Ramsey (Mayor Poole), Robert Clohessy (Lt. Gormley), Andrew Terraciano (Sean Reagan), Steve Schirripa (Anthony Abetemarco), Abigail Hawk (Abigail Baker) and Tony Terraciano (Jack Reagan).

"Blue Bloods" airs in Australia every Thursday at 10:30 pm on TEN. The show also airs in the US every Friday from 10-11 pm EST on the CBS TV Network. "The Thin Blue Line" will be aired on May 5 on CBS.

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