The Case That Binds Us

The man left the woman because of a mission. He later returned with a new mission-a mássácré in 1999 that eventually became a cold case with no justice served.

Meanwhile, the woman had been secret searching for her detective father for a long time, who mysteriously disappeared. She became interested in the massacre case after reading that a detective had died after the case was closed.

That's when they realized they were investigating the same case.