I think like most, the difference that stuck out to me the most was that Sam’s character from the text has been somewhat split into Stella the caretaker and Lisa Fremont, his girlfriend, and like Sam, willing to be daring for Jeffries. This is something definitely needed in both the text and the film in order for Jeffries to really get involved, someone to go out and gather information for him because he can’t. What is really different here is the motivations of these two. In the text, Sam is driven by some sort of ten year history with Jeffries and perhaps a paid servitude. Jeffries seems to pity Sam and at the same time not care for him much. I still wonder what ever happened to those eggs Jeffries asked him to smack together. In the film, Lisa, as his girlfriend, became convinced that a murder was afoot and at certain points even seemed excited about the prospect of helping to solve the case. She went into Thorwald’s apartment on her own, unlike Sam, and even to Jeffries’ dismay.

The breaking and entering brings me to another large difference between the text and the film. In the text, not only did Jeffries ask Sam to do it, it actually goes over smoothly, in the Sam was not caught breaking the law and made it out undetected. This is also different from the film because the intention in the text was to make him think someone was there looking for something in order to figure out where something might be hidden.

In the film, Jeffries is okay with Stella and Lisa checking the flower garden but when they don’t find anything Lisa sneaks into Thorwald’s apartment against Jeffries’ wishes. Unlike Sam, she is specifically looking for the wedding ring. Not only does Thorwald catch her in his apartment, the cops come at Jeffries’ call and arrest her.

Some minor differences are, the inclusion of the dog being killed to hide what it knew.  This might be more of a major difference actually. Another difference is Jeffries’ detective friend’s name. In the text it’s Boyne and in the film it’s Thomas Doyle.