True crime podcast's visionary (7)
I believe the answer is:
sincere
'true' is the definition.
(associated in meaning)
'crime podcast's visionary' is the wordplay.
'crime' becomes 'sin'.
'podcast's visionary' becomes 'cere' (I can't explain this - if you can you should give a lot more credence to this answer).
'sin'+'cere'='SINCERE'
Can you help me to learn more?
(Other definitions for sincere that I've seen before include "natural?" , "Candid" , "Without deceit, genuine" , "Genuine; deceit-free" , "like informal correspondents?" .)