Sergeant Podblog and the coded message

Sergeant Podblog is called in to investigate a murder (again) - the poor man can't get a minute's peace.

This time he investigates a murder of a famous writer, who has been stabbed in his own appartment.

There is a body, slumped across a typewriter.

There is a sheet of paper in the typewriter with a garbled message - but does it mean anything?

Listen and see if you can solve the murder - who killed Harry Wellington?