The plot, old-hat though it is, does provide an opportunity for that wonderfully seedy villain, David Dirby, to do his dirty work and more importantly, to tie all the thrillingly on-the-spot railroad footage together. Railroad buffs will enjoy all the atmospheric detail director Johnson has obtained by filming in real freight yards and inside and alongside real steam engines and rolling stock.

In 1906 Sweden, Captain Lars Larson (Knute Erickson) goes on a sea voyage, leaving his wife (Marcella Daly) behind expecting their first child. Unbeknownst to him while he is at sea, a bitter rival kidnaps her and makes it look as though she left him willingly. When he returns and discovers their home abandoned, he all but goes mad with bitterness and rage, destroying their home. In the years that follow, Larson becomes a sadistic, drunken reprobate of the sea, working for smugglers carrying all kinds of illegal cargo, including drugs -- and human cargo.