Ron is named main suspect in a murder and Toto investigates to clear his name. Everyone but Ron has an alibi for the time of the murder, which only seems to cement his guilt, but Toto discovers a few things that cast a new light on the incident.
So I thought there might have been 
some evidence of that left here.
فظننتُ أنّه ربما ترك أثراً ما هنا
Quindi ho pensato
che potesse aver lasciato qualche traccia.
Por isso, acho que pode ter
alguma prova neste quarto.
Тут могли остаться какие-нибудь следы.