let's go back to baltimore. another police-involved case is making headlines there. protesters are peacefully demanding answers and accountability in connection with the death of freddie gray. an attorney for gray's family says the 25-year-old died from a spinal injury he suffered while in police custody. an internal investigation is underway at the baltimore police department. plus, there's also a doj civil rights probe that's been launched. frances is back with timeline, tick tock of sorts of how this unfolded. >> a complicated case with a lot of nuances to consider when you're going through it here. so let's break it down with a help hitds from our friends -- a little help from our friends at the "baltimore sun." april 12th 8:39 a.m. four officers on a bike tried to stop 25-year-old freddie gray and another man. they run, and police say a