Tantei Jinguuji Saburou Series No.03: Kiken na Futari

Detective Hunter and his assistant Yulia have been invited to watch Yulia's friend Sabin participate in a motorcycle race. It doesn't all go too well when he crashes in the race, but when the racing team checks up on him it turns out to be Thomas, Sabin's apprentice, under the helmet. The mystery deepens as another friend of Yulia is found murdered in a hotel room.

[Edited from Pixelmenu]