Series 1 launched earlier this year, with the three episodes averaging a strong 5.7 million viewers in January.

However, the show may return on a different channel. A spokesman for Zen‘s independent producers, Left Bank, revealed: “Left Bank Pictures are currently in discussion with other UK broadcasters about Zen.”

Based on the Aurelio Zen novels by the late Michael Dibdin, Zen co-starred Casino Royale Bond girl Caterina Murino.