Sorry, Flossie - I didn't realise I should have only given a hint.
I have done your other one , too, so yell if you want the answer, as giving you an appropriate clue is beyond me!
Thank you everyone.im still fairly new to solving cryptics and I really appreciate this forum.
Could someone please explain 19 down? I get that he's an old detective and that caught out means remove a letter but Ko?
I would never have got 13 down! So thank you for that!