With 48 minutes remaining before the train reaches the next station, Sherlock declares that William and he can find the murderer in time. Sherlock relies on the evidence at the scene, while William pursues a psychological profile of the killer.
A knife, eh? I don't see one here.
The killer must have left with it.
.سكين؟ لا أرى واحدا هنا. لا بدّ أنّه بحوزة القاتل
¿Un cuchillo? No veo uno aquí.
El asesino debe habérselo llevado.
Un couteau, hein ?
Вроде ножа...