Where's Houston

S2, E20: Rockford searches for the granddaughter of Rocky's old pal, Preli, believed a kidnap victim, but his investigation uncovers a plot to gobble up real estate, including Preli's property in a rundown end of town. Before Rockford gets a good start, Preli is mysteriously slain, and Houston shows up explaining she had been on a geological trip to Mexico. Rockford's probe now centers on Preli's assassins and the only lead comes from Houston's new friend, Jerry, who is involved in real estate.