At least I think it's a Masterpiece Theater show. For sure it aired on PBS back then.
Here's what I remember.
The setting was probably 19th century or before. A magician who does tricks. Another man who is tough looking and is being chased by some individuals (maybe police). He finds the magician and they talk. I think the tough dude hits the magician's hand with a hammer. Later they are fleeing from the people who are chasing them. The tough man slips and is hanging on while the magician looks at him. I can't remember if he leaves him behind or not.
That's all I remember. Which episode was it, you think?