Betty Bryant is an ambitious newspaper reporter in love with Dan Barton, a member of a big-city Emergency Squad who are trained to deal with riots, cave-in, explosions, fires and other emergencies where lives are at stake. Slade Wiley, an unscrupulous tunnel builder, finds that his low bid on the Newford Tunnel project is causing him to lose a lot of money, and has underworld leader Nick Burton set off blasts to frighten the stockholders into selling their shares at a low price so he can buy up the stock. Betty is investigating the deal when Wiley and Burton take her on a "tour trip" to the tunnel.
William Henry
as Peter Barton
Louise Campbell
as Betty Bryant
Richard Denning
as Dan Barton
Robert Paige
as Chester 'Chesty' Miller
Anthony Quinn
as Nick Buller
John Miljan
as Slade Wiley
John Marston
as Lt. Murdock
Joseph Crehan
as H. Tyler Joyce, editor
Sam Ash
as Fireman
Barbara Barondess
as Ada Miller
Henry Blair
as Ada's Son
Stanley Blystone
as Mack - Emergency Squad Sergeant
