[4] He explained that the meaning behind the title involves "a lot of issues on the album relate[d] to co-dependency and unknowingly destroying a relationship and taking responsibility for that and not pointing outward.

"[4] Puciato arrived at this view as a result of "two really critical relationships in my life that were under a lot of strain... in a state of turmoil [and] unhealthy", while the album was being written.

[5] The title of the instrumental track "CH 375 268 277 ARS" is a cipher that only one person close to the singer can understand (which is not Weinman).

"[10] A statement following Puciato's contributions to the album said that the musical style of One of Us Is the Killer would be "progressive ambient mixed with noise", instead.

[4] He explained that this helped him to concentrate on how he delivered the vocals: I thought it would be a real detriment, because after three or four days I would start to sound different.

For some reason, being able to completely immerse and not poke your head out every two or three days really allowed us to go down the rabbit hole and keep the microscope on the vocals without having to switch gears.

[11]One of Us Is the Killer features high-profile guest vocalists playing other instruments, but the band members are not allowed to mention them.

",[2] while Jacob Royal of Sputnikmusic gave the album a rating of 4.1 out of 5, stating "One Of Us Is the Killer is easily the most sprawling piece of work The Dillinger Escape Plan has created yet.

"[23] All lyrics are written by Greg Puciato; all music is composed by Ben Weinman[25]One of Us Is the Killer personnel according to CD liner notes.