The Steel Cage is a 1954 American film noir drama film directed by Walter Doniger, written by Oliver Crawford, Walter Doniger, Scott Littleton, Berman Swarttz and Guy Trosper, and starring Paul Kelly, Maureen O'Sullivan, Walter Slezak, John Ireland, Lawrence Tierney and Arthur Franz.

[1][2] In three separate stories, San Quentin warden Duffy must contend with a crisis at the prison.

Ruthless convict Chet Harmon plans a breakout with help from brothers Al and Frank.

A gun is planted and Chet is almost successful, taking Warden Duffy hostage, but Al has second thoughts after his brother is seriously wounded.

A mural of The Last Supper needs repair in the prison's chapel, so chaplain Harvey asks an artistically inclined inmate named Steinberg to do the restoration.