ancient people use red colored minerals like hema tight and cinnabon to make their paints. the outlines of these pictures were hans more than once. scientists believe the ancient residents would have performed magical rituals of the rocks with cave paintings. it was believed the spirits of make sure would return ate them in hunting and cattle breeding. disease the it's so quiet here the river makes nearly no noise and there is no northerly wind so there is a curve in the river the place is sunlit and swarm ancient men always love to be warm you can assume with certainty that there used to be some heartsore caves our ancestors lived and you feel. when the travellers climbed up one of the rocks they found a small cave hidden inside. it's impossible to see it from beneath. before they gaze take a look at the still. i've never seen anything like it. it looks like a real tool of an engine man a flint used to skin animals and cutting meat good fine well done men well and yet . it is commonly known the ancient people first came to siberia from various regions of europe in asia the

>> the blood stains are going to do a hema trace on it for human blood or a primate. >> small. so we're going to apply that solution. if it's blood, it is going to mix and the first thing you are going to see is a small line of pure to tell you if the test is a valid test. then you know you have a positive for human blood. and we do have a line so that is human blood. at this point it's time for the showdown. if we take the two suspects, come back to the office, by the time we get here, i'd be up for probably a day and a half. dude, i am smoked right now. i am tired. whew. >> what i needed to find out from these guys is what their particular involvement in our murder was and if they had other information about other murders and in addition to that, what information they could give me about nico, particularly his whereabouts. >> i'm about to go in the first interview with the first suspect. that's him sitting there. right now, i don't know what's going to happen when i walk in there. i don't know if he's going to immediately want to speak with a lawyer and that's that or if he's