When they find the second female corpse in the woods, you can see the corpse breathing.
When Angela comes to Jane's apartment she says Jane's father is downstairs and Jane asks if Angela brought the dog too. Angela asks why she would bring the dog. Angela is never shown to have a dog.
The leads are supposedly very good friends, yet Jane had no idea Maura has had a tortoise for years.
In the opening scene with Jane, Frankie and Angela, Angela states that Frank and Tommy will be there soon. However, in When the Gun Goes Bang, Bang, Bang (2010), it is revealed that Tommy is in prison and has been for the last three years.