That evening, sitting out on the roof terrace at the end of their meal, Ffion tackles her brother.
"Look, Ellis, I saw two things this afternoon. One of them was that bakery Ithel mentioned. The one copying your chuckets."
Ellis jumps, eyes wide. "So -"
"The other," Ffion interrupts, holding two fingers up, "was that customer I told you about. He walked down an alley over the river and vanished
"So?" Ellis looks sulky.
"So I'll make a bargain with you."