Deliberate mistake: When Dominique is creating a Tinder profile for Fiona (an app Fiona admits she doesn't use), she manages to use Fiona's phone to take a picture of her, create a profile, and quickly get three matches, all within a span of 25 seconds. Downloading the app itself would take longer than 25 seconds, much less agreeing to its terms of service, and verifying the email or phone number associated with the account. (00:45:15 - 00:45:39)
Father Frank, Full of Grace - S1-E12
Continuity mistake: When Steve gives Fiona the ticket to Miami he says it is out of O'Hare. When he goes to the airport he is at Midway.
Debbie Gallagher: That's right. no ONE fucks with A gallagher.
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