Continuity mistake: When Jack drives to 18166 San Fernando Road he stops the car, gets out and leaves his phone in the car - you can see the green light of the phone's screen - he didn't reach for it. However, when Teri calls him, he has the phone in his pocket.
Continuity mistake: Emily Sloane's left ring finger was shipped to Arvin Sloane in one episode in Season 2, when they are reunited in the Philippines, the left ring finger is bandaged and missing. Later, in the episode when she is shot, when she tells Arvin the CIA is listening, the left ring finger is there.
Continuity mistake: Near the end, the detectives give Hawkins the murdered woman's manuscript to read and compare. The stack of papers they give him is easily 300-400 pages thick and held together with a large binder clip. Moments later, in a fit of anger, Hawkins throws the manuscript in the air and papers fly everywhere. The problem is that he throws no more than 50 pages in the air.
Continuity mistake: When Bug speaks with the beautiful widow the second time, about performing a noninvasive autopsy on her husband, her long hair continually changes position in the shots that face her.