<p>The family of a shoplifter who was shot and killed last December by an off-duty Harris County sheriff's deputy has filed a wrongful death lawsuit against Wal-Mart Stores Inc., the sheriff's deputy and the security company that hired him.</p>
<p>Shelly Marie Frey was killed in the Dec. 6 shooting. The off-duty deputy, Louis Campbell, told investigators he feared for his safety when he shot into a car and struck her, saying the driver tried to run him over.</p>