"There's a tiny little engine in the green of this grass and in the green of the trees that has the mysterious gift of being able to take energy from the rays of the sun and store it up. You see that that's how the heat and power in coal and oil and wood is stored up. Well, we thought if we could find the secret of all those millions of little engines in this green stuff, we could, we could make big ones! And then we could take all the power we could ever need, right from the sun's rays."

"James Stewart - Tony Kirby"

"[to Alice] You're so beautiful. Like, sometimes you're so beautiful it just gags me. Maybe you're not real? Maybe you're a phantom or something? I-I keep expecting you to vanish."

"Edward Arnold - Anthony P. Kirby"

"Ann Miller - Essie Carmichael"

"Spring Byington - Penelope "Penny" Sycamore"

"Francis X. Bushman — Clive Anderson"

"Fred Hamilton — Steve Lockwood"

"Carleton Young — Gordon Tracy (post-operation in Chapter 1)"

"Smiley Burnette — Mike McGurk"

"Brother against brother - one good, one evil. Ahh, I wonder which will win?"

"Lee Van Atta — Junior"

"ACE G-MAN --- WAGING A ONE-MAN WAR ON CRIME!"

"Ralph Byrd — Dick Tracy"

"Richard Beach — Gordon Tracy (pre-operation in Chapter 1)"

"John Picorri — Dr Moloch"

"Kay Hughes — Gwen Andrews"

"Spencer Charters — Innkeeper"

"Robert Lowery — John Weaver"

"Kay Linaker — Mrs. Demooth"

"Francis Ford — Joe Boleo"

"Russell Simpson — Dr. Petry"

"Jessie Ralph — Mrs. Weaver"

"John Carradine — Caldwell"

"Ward Bond — Adam Helmer"

"Claudette Colbert — Magdelana "Lana" Martin"

"Edna May Oliver — Mrs. McKlennar"

"Roger Imhof — Gen. Nicholas Herkimer"

"Innkeeper: [to Gil and Lana about Caldwell] And that patch over his eye - I bet he lost it trying to see something that was none of his business."

"I've a long face, and I poke it where I want."

"Thrilling, Stirring, Spectacular!"

"Your thoughts are your own property, Martin, but keep them to yourself."