Help: only 1 out of 36 exposure 35mm film was developed

First. Every time you send something to be developed ask for the full film to be returned, even if all of it is messed up.

This will help you diagnose what is happening.

If you have all the film and you only have 1 print, you need to analyze the negatives.

Here is an example on a light leak on the film: These SLR developed photos are bad. Is it mine or the photolab's fault?

• Is it actually exposed?
• Could it be that the film got stuck?
• Is the camera actually working? Probably the curtain never opened.

It is a bit difficult to know without having the film, but you can see if the camera is working using it with the back door open. You should see the courtain actually opening and the film gears actually rolling.