Maybe you can help.

   I am going nuts trying to find the title for a crime movie I saw on TV in the mid-70’s. Only caught the last half and I don’t recall any major stars.

   The plot: a group of detectives are in a police office after hours waiting for one of the number to come in. In strolls a woman with a gun and a bottle of nitroglycerin. She claims the detective killed her husband and she’s going to kill him when he arrives. If any of the other detectives interfere, she’ll shoot the bottle of nitro and blow the whole office sky-high. Much tension ensues.

   Does this movie sound familiar?

                   — Tim Mayer