The Good Man - S1-E6
Other mistake: At the end of the finale, Strand's yacht is way too close to shore. They wouldn't have had to use binoculars to see it if it was that close.
This Land Is Your Land - S3-E13
Other mistake: When Nick is talking to Troy about saving the people on the ranch from the herd, Frank Dillane's British accent slips through. He says "if they do die, it's not because they were too good for this world it's because we failed."
Suggested correction: Travis is the one who says "Nick".