1: No one told sister (3)

3: Wooded hillock forming part of Arthur's territory (5)

6: Plots get Cuban revolutionary leader in a terrible mess (7)

7: This is truncated, or the end's off (9)

9: Song about death for lover of Theseus (7)

12: Looking at a little monkey in glee (5)

13: Nothing we have to pay (3)

1: Greek characters suggest dawn (3)

2: Solo, the pilot rises? No way (3)

3: Poor man's right to make powerless (9)

4: Moulding material to be included in upcoming miniseries (5)

5: Excessively sentimental dunderhead in the river (5)

7: Rambling tales are out of date (5)

8: Approve a constant beast (5)

10: Couple in arduous dispute (3)

11: The time before the first woman (3)