- Channel Hop: After NBC pulled the show following its first season, the show hopped to Amazon Prime for its later two seasons.
- Fake Nationality: Englishwoman Lara Rossi plays Dutchwoman Arabela Seeger. Goran Vinjić, who's Croatian-American, plays Italian Marco Constante.
- International Coproduction: It is a joint European/American production between TF1 and Sony Pictures.
- Romance on the Set: Between Gabriella Pession (Eva Vittoria) and Richard Flood (Tommy McConnel). The two began a relationship after meeting on the show, then had a baby boy in July 2014 and got engaged. The pair were then married in 2016.
- Real Life Writes the Plot: Eva has been kidnapped and/or murdered at the end of the second season, which several people are chalking up to Pession's going on maternity leave. Her fate in the show was left ambiguous, presumably to allow her to come back if she wanted to (however this never happened, since the series wrapped up in December 2015).
Trivia / Crossing Lines