mark's shoe along with six different paint samples collected from the resort to forensic scientist keith lamont received several specimens from the resort area. >> he bombarded the sample with infrared light which shows the sample in ways that can then be measured. >> paints composition basically consists of a solvent which is a liquid. a pigment which is color. and a binder. and the binder you can think of as glue. >> lamont found that the paint on mark unger's shoe was virtually identical to the paint on the railing. and the post holding the railing. >> the example from the shoe was consistent with the paint from the rail. >> to investigators, this pointed to only one logical conclusion. >> we believe mark kicked that railing. the paint on the shoes would suggest that. >> but was this enough to get a conviction? [poof!] [beep] [clicks mouse] nice office. how you doing? good. automatic discounts the moment you sign up. bulldog: bulldog: mattress discounters presidents day sale ends presidents day? get a queen-size sealy gel memory foam mattress for just $497! and get four years interest-free f