They would give me the trails of evidence to pursue.

他们会给我提供可供追查的证据线索。

Authorities say the trail of evidence from an abduction caught on video in Philadelphia has led them to a convenience store in Maryland.

当局说, 费城绑架案相关的一则录像为调查提供了证据，引导他们将焦点集中在马里兰州的一个便利店上。