38-year-old California mother Heidi Planck was last seen leaving her 10-year-old son’s football game in Downey, California on October 17, 2021. Her ex-husband, Jim Wayne, reported her missing three days later when she failed to pick their son up from school. Hours after Heidi was last seen, her dog was found on the 28th floor of an apartment building in downtown Los Angeles. Dateline’s Josh Mankiewicz speaks with Jim Wayne and one of Heidi’s close friends. Heidi is 5’3” and 120 lbs., with blonde hair and blue eyes. If you have information on Heidi’s case, please contact the Los Angeles Police Department at (213) 486-6840 or the Los Angeles Regional Crime Stoppers anonymous tip line at 1-800-222-TIPS.