An hour ago, while everyone was searching the palace, the first thing Alex fixed his eyes on were the royal guards. He knew that if he wanted to get any clues, he must investigate every single one of them. These royal guards were the only ones who were able to move around the palace freely without question and without garnering much attention. The people who were behind Abigail's disappearance would almost certainly use the soldiers to do the dirty job or at least be in league with a few of them to be able to escape unnoticed.
During the search, Alex's keen senses noticed a faint scent from one of the soldiers which was unusual. When Abigail was with Alex, he noticed that the girl wasn't fond of perfume so he couldn't tell if the scent he smelled was from Abigail. However, the scent was feminine and that scent was enough of a clue for Alex to interrogate that soldier because it was strange for any soldier to have a scent like that.
