The Prisoner of Karlsten's Fortress
Movie| Title | Fången på Karlstens fästning |
| User score | 6 |
| Release date | Nov 14, 1916 |
| Genre | Adventure |
| Director | Georg af Klercker |
| Production country | Sweden |
| Production companies | Hasselblads Fotografiska AB |
| Run time | 61 min. |
Count de Faber is working on a new type of explosive, but finds out that Professor Plussman has beat him to it. After an unsuccessful attempt to acquire the formula from Plussman, he breaks into the professor's house, steals the formula, and kidnaps his daughter, Mary. He takes her to Carlsten Fortress.
