Tls

[frameshift]

15a It's found in a patch of grass (8) T?I???P? Is this TRIGRAPH?
16d Tries therapy perhaps not suitable for actors? (9) ??L?P?A?S Is this ROLEPLAYS?
I can't quite see the subtleties if these are the answers. Thanks for explanations.

[jim360]

I think 16d is a double definition "Role playing" can be a tool used in some therapy I think.

15a looks like a cryptic definition -- trigraph = three letters making one sound, as in the "ASS" or the Gra of grass?

[frameshift]

Thanks. Yes and TCH is a classic trigraph in patch, but...