English is her working language and the only one she uses, which spares a first-time visitor any guesswork about how the evening will sound. She is based in the Amsterdam Centrum. Guests who fix a date with her weeks before landing often choose a sensual session of ninety minutes, long enough for the jet lag to stop mattering. Twenty-four and dark-haired, relaxed in conversation, direct about what she will and will not do. Once the room number reaches the thread after check-in, the only thing left is the knock.

Brooklyn decides which bookings she takes and may decline any of them; she sets the limits for what a session includes, says what they are, and may end a visit at any point, as the terms set out.