prescription eucrisa is a nose to toes eczema ointment.es within your skin. and it's steroid-free. do not use if you are allergic to eucrisa or its ingredients. allergic reactions may occur at or near the application site. the most common side effect is application site pain. ask your doctor about eucrisa. ♪ ♪ ♪ ♪ the all new 2018 camry. toyota. let's go places. >> reporter: in the hardin county courthouse it is zach adams's turn to defend himself. his attorney, jennifer thompson, calls a cell phone expert. he determines that although zach adams's phone may have been in the same place as holly bobo's at times on the day of the crime, at other times that day, zach and holly's phones were far apart. >> at 8:17, holly's phone is over in this area. and at 8:16, zach adams's phone is over here, and they're miles apart, okay? >> reporter: but it's not just about creating reasonable doubt -- thompson is shooting for reasonable certainty that the real killer was someone else. for assistance she turns to terry dicus -- the former lead investigator