Not just the hacking of Milly Dowler's voicemails;
not just listening in to every word spoken by a distressed relative;
not just deleting messages when the inbox was full, to make space for more messages;
but actually profiting from the brief moment of false hope when people thought that Milly Dowler must have deleted the messages herself and thus be alive, by sending hacks round to conduct an exclusive interview with the unaware family about their hopes
More details here.
Original post on Dreamwidth - there are comments there.