The Fortified Building

The apparent security of 18 Kentigern Gardens conceals a route that a person already inside can exploit.

increasingBearing stren­gth in each eventdecreasing

The Five-Star Fortress

Security on Display Controlled entry The building has a keypad, an entrance camera, security staff, alarms, and a subterranean car park. Its expensive fittings make it appear difficult for any stranger to enter unnoticed. Protection with gaps The guard code is widely known, the cameras do not cover every interior space, and doors are sometimes left open. The security system is impressive as architecture but depends on ordinary people following ordinary procedures.

A Flat Left Open

An Opportunity Below Lula Work inside the building A repairman inspects the alarm system while Wilson and the cleaner move through the flats. The middle apartment is vacant, accessible, and linked to Deeby Macc’s forthcoming stay. Access becomes concealment The flat contains clothing and has a functioning alarm, but someone who hears the temporary code can use it later. Its emptiness allows a killer to hide, wait, and dress without entering Lula’s flat until the moment is right.

The Exit Without a Witness

The Unseen Route A building in confusion Tansy screams, Freddie returns to his flat, and Wilson runs upstairs to search Lula’s rooms. Police and neighbors focus on the body outside and the frightened residents. An intruder slips away Bristow resets the alarm, descends while attention is elsewhere, and leaves through the lobby as the snow falls. The apparent fortress provides no protection once its staff and residents are responding to several crises at once.

During Strike and Robin's first visit to the address

On January 7 during alarm maintenance

Immediately after Lula's fall