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Set in Long Island, New York. The town is called Southold in Long Island's Peconic Bay, but actually filmed in New Jersey. The pilot's beach footage was filmed in Island Beach State Park.

Marks the second time Allison Tolman has played the main character as a police officer. The first time was as Molly Solverson on the first season of Fargo.

The lighthouse featured is the Barnegat Lighthouse, located in Barnegat Light on Long Beach Island in New Jersey.

Characters who are close to Piper wear a lot of blue (the colour that represents Piper) and green (Piper's favourite colour).

Alexa Swinton (Piper) had a guest role on Manifest, which like this show starts out with a mysterious event involving a plane.