Budd Boetticher directed 1948's Assigned to Danger.
Gene Raymond plays an insurance investigator hoping to get a line on an $80,000 payroll robbery. He traces the sister of one of the robbers to a resort she owns. While there, the crooks arrive, and one of them is seriously injured. Thinking Raymond is a doctor, they force him to help.
Gene Evans plays a mute man with a unibrow. He works on the property.
I've always found Gene Raymond a bland, serviceable leading man. As he matures, he moved out of those roles and became more interesting.
Though this is low-budget, Boetticher does a good job ramping up the tension in this dark film. The dialogue and atmosphere aren't much.