Accessing a values from : I have the following dictionary

    Dict = {'Manu':{u'ID0020879.07': [{'ID': u'ID0020879.07', 'log': u'log-123-56', 'owner': [Manu], 'item': u'WRAITH', 'main_id': 5013L, 'status': u'noticed', 'serial': u'89980'}]}

How can I access the serial from this dictionary? 
I tried `Dict[Manu]['serial']`, But its not working as expected..
Guys any idea?