In the movie, it's filled with a strange, glowing, possibly atomic device; Alex Cox's Repo Man and Quentin Tarantino's Pulp Fiction famously paid tribute to this device.
Packed with extras, this new Criterion release sends novelist Mickey Spillane's knuckle-dragging private eye Mike Hammer (played by gruff lump Ralph Meeker) through a cesspool of tawdry twists, all of them hinging on a mysterious box containing a deadly light that fans of Pulp Fiction should find eerily familiar.
The glowing suitcase is a reference to Robert Aldrich's Kiss Me Deadly.
Tarantino giddily incorporates references to seemingly countless pop-cultural texts (Kiss Me Deadly, Saturday Night Fever, and so on)…
Consider how, hidden somewhere in the subtext amid Jules’ recitation of his passage from Ezekiel and the briefcase containing an awe-inspiring sight of golden luminescence (a nod to Robert Aldrich’s noir Kiss Me Deadly ), there exist hints of a religious theme.
Find here, too, explication of Tarantino's casting choices, from Willis for his spiritual resemblance to Ralph Meeker's asshole hero of Kiss Me Deadly to Travolta for his quality of winsomeness, largely unseen since at least Blow Out if not Saturday Night Fever .