and in terms of where it lands in the "noir spectrum" (<--- hard boiled XX melodrama --->) this short-hand diagram shows it right in the middle of the pack.
As Mark Fertig notes with a bit too much academic certainty in his review at WHERE DANGER LIVES, the mise-en-scene is a bit sub-par in comparison to everything else--and the noir-o-meter ratio called V/C (measuring the strength of the visual elements against the character elements) is 87 (with 100 being average). The character scores in these comparisons are the highest, averaging 116, which confirms the basic story strength and the proficiency of the actors in carrying the narrative load.
Over at mystery*file, Dan Stumpf notes the depth of characterization that seeps down into the minor characters in the film:
"This is an unusually intelligent film, with stops along the way for well-realized minor characters, like Leiber’s bitter daughter, broodingly portrayed by one Maria Palmer, an actress who should have gone further. And we also get the patently unsympathetic Howland Chamberlain — you may recall him as the loathsome druggist in Best Years of Our Lives or the smarmy hotelier in High Noon — as a pretentious author with clues to Price’s past. Fleeting pleasures in a film that provides an engaging and entertaining eighty-seven minutes well worth your time."