The Last Hours – Cassandra Clare’s fourth series set in the Shadowhunter universe – is still a few years away, but nevertheless Cassie has released a first snippet on her tumblr:
Matthew held out his hands. “Pax,” he said, wheedlingly. “Let it be peace between us. You can pour the rest of the port on my head.”
James’ mouth curved up into a smile. It was impossible to stay angry with Matthew. It was almost impossible to get angry at Matthew.
Cassie also briefly talked about Matthew, Charlotte and Henry’s second son:
Lucie adores Matthew. He’s her brother’s parabatai. Everyone loves Matthew. He’s one of those people.