True Identity
The cop told the couple that they did not have to worry about anything because the thing that they found on the shore of Middleton Sands was not dangerous in any way. However, it was something very unusual for people to find randomly, but being discovered at a coast was kind of not surprising. It was eventually revealed that the thing was actually ambergris. Steven and Viola made the same facial expression letting the cops know that they clearly had no idea about what they were talking about.

True Identity