A new four-part series in which Tony Robinson goes on a fascinating and sometimes bizarre journey to discover the origins of our laws and what we do to people when they break them. In this first programme, Tony looks at the first millennium AD and the waves of foreign invaders that left their mark on the way we organise ourselves and sort out disputes, from Anglo Saxon family blood feuds in which it was perfectly legal to bump off a rival, to a surprisingly sophisticated system of courts and written laws established by King Alfred.

• Tony Robinson