The Echo Murders on AllMovie

That daring pulp-novel detective Sexton Blake is back again in The Echo Murders. David Farrar stars as Blake, a Sherlock Holmes wannabe who takes on a gang of Nazi spies. While solving a series of baffling murders, Blake is captured and beaten by the bad guys, but emerges from his ordeal none the worse for wear and with hardly a crease in his trousers. In one scene, our hero uses acid to burn off the ropes that bind his hands, miraculously doing no harm whatsoever to his wrists. Of interest is the presence in the cast of future British leading man Dennis Price, who like David Farrar seems to be grateful to have the work.