10d. Average ruler's rate joined lot in America (7,5) ???I?G ?P?C?. 12a. US drama of gambler before stormy nights (6,6) ?E?T?? ??????. 13d. TV panellist shifting across a pea (4,6) ???? P???O?. Thanks
10d Parking space ("lot" in America) - 'par (average) king's pace (rate)'
12a Better Things - 'better' (gambler) + anag 'nights'
13d Sara Pascoe - anag 'across a pea'