![](https://image.tmdb.org/t/p/w92/kAkVnyU0D9phlK8FmmcsYwhz8XQ.jpg)
Russell Hopton
Det. Lt. Ted Mallory
![](https://image.tmdb.org/t/p/w92/scglt4LowjQE19YQJWkHaunU0ff.jpg)
Lola Lane
Kay Palmer
![](https://image.tmdb.org/t/p/w92/bJ1rF0A1UkH8mgjR6925qIY2wW7.jpg)
George F. Marion
Jim Gray
![](https://image.tmdb.org/t/p/w92/q242vTdxgXFTVjmtDB5sPjxfhHy.jpg)
John St. Polis
Prof. Trowbridge
![](https://image.tmdb.org/t/p/w92/tANnH4j9H2HSNbUy7Kdzjh1E5Pj.jpg)
Lee Kohlmar
Prof. Ernst Einfeld
![](https://image.tmdb.org/t/p/w92/d3Euk0SE0EJE5K5TKhantKL5kg8.jpg)
Lew Kelly
Det. Regan
![](https://image.tmdb.org/t/p/w92/7FYUp62z6DR76sCEeUZHts9cDJW.jpg)
E.H. Calvert
District Attorney