Theo didn't send a reply but grabbed the book from his desk and headed for the fireplace, then changed his mind and left the book, just in case it was charmed to be tracked. This wasn't a time for mistakes.
With the letter in hand, he took the floo to Malfoy Manor, waiting for the house elf to escort him right.
He didn't smile as usual when he entered the room, but got right to the point.
"I had an interesting letter arriving today," he looked at the elf and waited for it to disappear. "From You-know-who."
"He wanted me to put this letter for you in the interoffice mail-system. I've already checked it for hexes." He handed the letter over and took a seat in a nearby chair.