Dagwood accidentally discovers a non-flammable paint. Bad guys Dillon and Stack steal it before he can give it to his boss Radcliffe. To show off his invention, Dagwood paints Radcliffe's house with it and is disgraced when the house burns down!
| Actor | Role |
|---|---|
 Penny SingletonBlondie Bumstead | Blondie Bumstead |
 Arthur LakeDagwood " Dag " Bumstead | Dagwood " Dag " Bumstead |
 Larry SimmsAlexander Bumstead | Alexander Bumstead |
 Marjorie Ann MutchieCookie Bumstead | Cookie Bumstead |
 Jerome CowanGeorge M. Radcliffe | George M. Radcliffe |
 Collette LyonsNorma | Norma |
 Wilton GraffJoe Dillon | Joe Dillon |
 Ray WalkerHarry Slack | Harry Slack |
 Stanley AndrewsMr. Forsythe | Mr. Forsythe |
 Mason Alan DinehartRollo (as Alan Dinehart III) | Rollo (as Alan Dinehart III) |
 Eddie AcuffMailman | Mailman |
 Jack RiceOllie | Ollie |
 Chester CluteMayor A.K. Ramsey | Mayor A.K. Ramsey |
 George LloydFire Chief | Fire Chief |
| AAlyn LockwoodMary, Radcliffe's Secretary | Mary, Radcliffe's Secretary |
 Danny MummertAlvin Fuddle | Alvin Fuddle |
| DDaisyDaisy | Daisy |
 Sue CaseyNot listed | Not listed |