mark's shoe along with six different paint samples collected from the resort to forensic scientist keith lamont i received several known samples from several locations, from the vacation home and boathouse area. >> he bombarded the sample with infrared light, which identifies the chemical makeup of the sample in ways that can then be measured. >> paint's composition basically consists of a solvent, which is a liquid, a pigment, which is the 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 question of sample from mr. unger's shoe was consistent with the known paint from the rail. >> to investigators, this pointed to only one logical conclusion. >> we believe mark kicked that railing, and the paint stuff on the should would certainly suggest that. >> but was this enough to get a conviction? sea captain: there's a narratorstorm cominhe storm narrator: that whipped through the turbine which poured... surplus energy into the plant which generou