Tracing the Lost Daughter

The voice made Richard inexplicably feel a tinge of fear. "Y-yes, this is Richard." He cleared his throat, trying to keep his tone as normal as possible. But inside, he was panicking.

He thought, 'Who could this be, calling him with such a tone at a time like this? A business partner? No way—that isn't possible anymore. I don't have any partners left.

'Could it be someone coming to collect debts?