5D Fictitious plot to murder Charles II of 1678 (6,4)
thought it was the Rye House Plot but this doesn't fit in with my letters of ??P?S PLOT
19d city in Nigeria; capital of Oyo state (6 letters)
I?????
Is 20d Killer Whale?
25a Extensive grassy plain us without trees (6 letters)
Have S?E?P?
27a Was the youngest daughter of King Lear Cressida as this fits?? (8 letters)
Haven't a clue what 34A i e Sergei P?????I?V Russian composer composer of Romeo + Juliet was (9 letters)
Any ideas anyone?
Finally 37a womaen's light dressing gowns lace-trimmed (9 letters) Are they NIGHTIES but my answer to 33d ends in an 'I' so doesn't fit in with this answer.