Grace tells Karen that she hates the word "mentor". However, in Episode 5 (2019) she actually uses it herself with regard to her relationship with Karen, saying "And they say women don't mentor other women."
When Detective Rasmussen asked Detective Parker his email on the phone, Parker told her parker@lynnwoodpb.com. The domain of the police department email should end with [dot] gov.
At the end when Marie talks to Duvall, her iPhone case is on upside down.
When Marie is speaking on the phone with the Detective from Colorado near the end, she is using an early version of the iPhone. Marie is holding the phone upside down, as it is obvious that the power button is on the bottom of the phone but it should be held the other way so the power button is on the top.