Their first release since expanding to a three-piece with the addition of bassist Rob Graham, who played on three tracks, the album was produced by Ross Orton and recorded at McCall Sound Studios in late 2014.

[12][13] The album was announced on 27 January 2015 and the band performed a track from it on The Late Show with David Letterman the same day, their first appearance on American television.

DIY Magazine awarded the album a perfect score calling Drenge "a band finding their feet before taking to the skies."

"[17] The Guardian described Undertow as "the sound of a band who’ve found their murky flow" and "an album that will pull you under.

"[19] The Line of Best Fit declared: "Drenge make a bloodied mess of the idea 'second album syndrome.'"