Plot hole: After Grant finishes her video confession, Latif puts the video recorder in his cargo pant pocket. A few scenes later, he's blown up without ever having taken the video camera out of his pocket. He was at the epicenter of the explosion and he and his clothes were very much on fire, which should have completely destroyed the video camera and its recording.
Revealing mistake: When the target's iPhone rings and Christopher Chance answers it, he swipes his finger across the bottom of the screen, which is the regular gesture to answer a call on the iPhone. Trouble is that we see the screen at the time, and it's not showing an incoming call, just some sort of list - he swipes his finger over nothing of any significance at all.
Episode Two - S1-E2
Visible crew/equipment: About 20 minutes in when the boys are walking up the hill to return to the boat, as the shot is drawing close to Quinn a plant gets pushed over by the camera.
Factual error: The Merchant Navy rank insignia is very poorly researched. Each officer seems to have a different style of insignia, despite working for the same company and they incorrectly wear rank insignia on the shoulders of their blue uniforms as well as the cuffs. The main character, Junior Third Officer Mortimer, wears a bizarre mix of insignia, apparently consisting of a Royal Navy petty officer's sleeve badge, a Royal Navy chief petty officer's cuff buttons, and a rank badge of three inverted chevrons on his shoulder boards that doesn't seem to resemble anything from reality. In reality, he should simply wear a single cuff ring (or shoulder bar in white uniform).
Continuity mistake: In episode 3 or 4, one of the characters is knocked out and lying on the floor in the Russian sub. He is on the 'left' side of the shot most times he is shown, but occasionally he's on the right.
Continuity mistake: During the final shootout scene, Dan hides behind a Mustang when the redneck truckers are shooting at him. The right front tire gets shot out, and the car drops on the rim. The shot cuts to Dan, and the car's right front tire is again shot out. It is not a different view of the shot, it is supposed to be continuous action.
Continuity mistake: At the end of the show when Cyrus is sitting at the end of the bed, he puts the 2 champagne flutes next to the bucket, when they flash back to the bucket they are gone, then they are back again.
Continuity mistake: When the bomb under the bus is being defused, it's counting down and beeping once every second. We see the timer at 0:45, then cut to the face of the woman defusing it - counting the beeps when we cut back it should be on 0:45, but it's jumped up to 1:06. Camera pans down to her face, then back to the bomb, and it's now on 0:43, but going by the beeps it should be on 0:36. We cut away again for 5 more beeps, cut back and the bomb's only just ticking onto 0:41.
Continuity mistake: When the hostages try to get some rubble to catch fire, they find that everything is covered in some flame retardant stuff. Yet, in the very first episode one of the very first things they do is to make a small fire to get the fire alarm going.
Factual error: The wedding is at a Christian church preformed by a Christian minister, but at a Christian wedding the groom stands on the Minister's left side and the bride on his right. The way Ryan and Cate stand is the way that the bridal party stands at a Jewish wedding.
Continuity mistake: Jack rushes in at night to save Kate who has been drugged by the evil professor. Jack resuscitates her and calls an ambulance. When the ambulance leaves it is bright daylight.