Instinctively, Lucius stepped in front of his family at the warning his wife gave him. He held his wand up and summoned a shield charm for around them. If anything it would by them time. His eyes never left the dementor knowing that there would be more now they found their prey.

Draco did his best to try and focus on happier memories knowing the stronger they were the better the Patronus charm would be. It was extremely hard to focus when he was terrified beyond belief.

Draco managed to do a sliver of a Patronus as another one came swooping down on them. He kept trying again and again not wanting to give up knowing it was important.