“Modern Day Cain” is I Don’t Know How But They Found Me’s first released single. The song was released on August 8, 2017.

After the release, it jumped to number 7 on American alternative iTunes charts, and held that position for six days.

The song itself was inspired by the priest character on a British TV show called Broadchurch. The character’s vicar also sparked a line or two.

The music video for “Modern Day Cain” was released August 18, 2017, and models a cable access series. Dallon Weekes was engrossed with watching old cable access talent shows on YouTube, and was inspired to use the same type of idea for “Modern Day Cain.”