‘Blue Bloods' Season 6 Episode 15 spoilers: Erin deals with guilt, Frank faces off with mayor in 'Fresh Start'

The 15th instalment of "Blue Bloods" Season 6, titled “Fresh Start,” delivers another host of family issues entangled with the complications of cop duty. Erin (Bridget Moynahan) is haunted by her past, which leaves her dealing with a guilty conscience.

The episode will also feature other “Blue Bloods” cast members including Frank (Tom Selleck), Danny (Donnie Wahlberg), Erin (Bridget Moynahan), Jamie (Will Estes), Henry (Len Cariou), Det. Maria Baez (Marisa Ramirez), Linda (Amy Carlson), Nicky (Sami Gayle) and Officer Eddie Janko (Vanessa Ray).

Spoiler alert! This update contains more "Blue Bloods" spoilers. Read on at your own risk if you have not watched the latest episode.

According to TV Guide, “Fresh Start” centres on Erin, as struggles with guilt after a man whom she recently freed becomes the main suspect of killing a cop. Meanwhile, Frank and Mayor Poole continue to play games following Frank’s reappointment as commissioner. Elsewhere, Danny and Baez delves into the case of police officer who has gone AWOL.

The episode preview opens with Erin receiving a report that a cop has been shot and killed. When she finds out who the main suspect is, she asks, “I’m responsible for this?” The next scene shows Erin offering her condolences to the cop’s grieving family member, who responds by slapping her. The teaser asks, “Will this fallen officer lead to a prosecutor’s downfall?” Click here to see a preview of the episode.

“Fresh Start” is directed by David Barrett and written by Brian Burns. "Blue Bloods" Season 6 episode 15 will also see the return of David Ramsey who reprises his role as Mayor Carter Poole. The Internet Movie Database (IMDb) named other actors and actresses who will be seen in this episode, such as recurring “Blue Bloods” cast members Jack (Tony Terraciano), Sean (Andrew Terraciano), Abigail (Abigail Hawk), DCPI Garrett Moore (Gregory Jbara) and Lt. Gormley (Robert Clohessy).

Other guest stars include Steve R. Schirippa (Anthony Abetemarco), Kyle Paul (Officer Kenneth Nelson), Adriana Demeo (Laura Nelson), Scott Aiello (Officer Abrams), Leo Minaya (Javier Fernandez), Billy Smith (Sgt. Rutkowski), Liza Bennett (Mrs. Gibson), Daniel J. Watts (Adrian Cooke), Pallavi Sastry (Cameron), Elizabeth Loyacano (Tina Costello), Donal Brophy (Andrew) and Jourdan Battiste (Kendrick Morrow).

Find out what happens next on "Blue Bloods” Season 6, which airs in the US every Friday at 10 pm on CBS. In Australia, “Blue Bloods” airs on Thursdays, 10:30 pm on TEN.