Flashpoint - S1-E5
Character mistake: Chief Pope threatens to take away Lt Flynn's stripes. Lieutenants don't have stripes.
You Are Here - S1-E7
Continuity mistake: Brenda's rape scene scar moves from directly above her left eye to directly above her right.
Standards and Practices - S1-E13
Visible crew/equipment: Two crew members, one with a camera, are seen when Brenda confronts the father about the murder he committed. (00:41:45)
Visible crew/equipment: Just before Chief Johnson and Sgt. Gabriel get out of the car at the victim's parents' house, a crew member and lighting equipments are reflected in his sunglasses. (00:07:20)
Visible crew/equipment: Brenda walks into the interrogation room to question Koslov. When we see Brenda on the monitor with her back turned, the outline of her mic transmitter bodypack is visible at her lower back, then as she takes a seat across from Koslov, we see the mic transmitter behind her. (00:11:35)
Saving Face - S3-E3
Revealing mistake: After they drop the casket and Provenza says 'guess you can take it with you!', the close up of the dead girl shows her close her mouth.
Continuity mistake: Lieutenant Provenza is showing Brenda the video footage of the (innocent) suspect in a parking lot far from the crime scene at the time of the murder he's accused of. This proves him innocent, but the suspect has been said to be there for 8 minutes, time enough to 'do a needle', but the time stamp on the video says 10:35 pm when the car arrives and 12:35 when the guy gets into it to leave. 2 hours. (00:34:15)
Blue Blood - S2-E1
Continuity mistake: Just before the body of the dead police officer is brought out of the warehouse, Brenda is seen carrying her bag in her right hand down by her side. Cut to a closer shot and the bag is on her right shoulder. (00:08:15)
You Are Here - S1-E7
Continuity mistake: Brenda is questioning the ex-wife. Her hair moves back and forth over her right shoulder. (00:37:40)
Continuity mistake: There's a yellow line on the ground next to Brenda's head while she is lying down and talking to Gabriel. This line is either on the left or right side in different shots throughout the conversation. (00:02:40)
Serving the King (Part I) - S2-E14
Continuity mistake: As the camera cuts back and forth to Taylor eating a rice cake during one of the team's brainstorming sessions at the murder board, the half-eaten rice cake gets smaller and then suddenly larger again several times.
In Custody - S6-E3
Continuity mistake: At the very end, as Brenda lays her head on Fritz's chest, Joel, the cat, is on Fritz's lap. Cut to the next shot and the cat is now sitting comfortably on the sofa next to him. (00:41:40)