King, Queen and Twin are all sizes of beds, so the question refers to to the room having beds in it,
The anagrams: Antwerp, Brazil, mason, knuckle, garlic, Panther, blackberry, wrestling, shakers, bicycle
Mr. Thomas: if first day of school, how are there exam papers?
Saturday
Mirror
Titus (it follows the Do Ray Mi FA So La Ti Do for first letters)
Either: 2+3=5 (there is no stated requirement to use all the numbers)
Or 4+5=3-squared... but it's possible that constitutes a mathematical symbol somehow.
Assuming the police didn't tell him where to go, if he wasn't guilty he wouldn't know where the crime scene was.
They actually both lied, so the girl has black hair, the boy has white hair.
If only one is lying then you either have two boys or two girls, which we know we don't.
The equation becomes 5 + 3 = 8