Hold a show trial (8)
I believe the answer is:
rehearse
'hold' is the definition.
The definition and answer can be both to do with creating things as well as being verbs in their base form.
Perhaps you can see a link between them that I don't see?
'a show trial' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
'show' could be 'er' (US medical drama) and 'er' is located in the remaining letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rehearse that I've seen before include "Practise before performing in public" , "Go over" , "Practise play in theatre" , "Practise before a public performance" , "prepare for performance" .)