Goofs

The execution of the murderer's plot requires precise actions during the minutes between 10:00 and 10:15 p.m., to coordinate the radio, the telephone call to the switchboard girl, etc. If one puts together all the information about times and actions given in the four relevant scenes -- in Forbes's home office with Street and Wong, in Tanya's apartment with the switchboard girl explaining to Street what she heard and when, in Wong's discussion with the radio station owner about when the program started and stopped, and in the final confrontation of the murderer with Wong where he explains the timing of his actions -- one sees that the timing described in all these different scenes can't be harmonized. To give only one of many inconsistencies, when Street and Wong enter Forbes's office it is at most 1 or 2 minutes after 10:00 (based on the henchman's announcement of 10:00), and they are there for much less than 13 or 14 minutes of real-time conversation, yet during their time there they get a call from police headquarters about the murder which the switchboard girl didn't report to the police until after 10:15.

There's a completely different calendar on the wall behind Capt. Street's desk at about 0:02:58 than there was just 5 seconds before.

When Street and Logan are arguing about her story in the paper, the sergeant calls into Street's office saying "There is a gentleman here to see about Grady."

Street sends Bobby out to 'interview' him. When she goes out into the anteroom, she asks the 'gentleman' "Are you Mr Lyons?"

The man's name was never mentioned.

Drinks suddenly appear on the table in front of Tanya and Frank between shots. Plus, she complains the drink gave her a headache despite her not drinking it at all.

When Frank goes to see his father to tell him he is marrying Tanya, a shadow of the boom microphone can be seen moving on the wall above them at the top of the frame.