4:05newsAugust 2, 2018Police identify suspect, motive in cardiologist murderPolice believe Joseph Pappas, 62, ambushed and murdered Mark Hausknecht, the famed Houston cardiologist, possibly motivated by revenge for the death of his mother. Up Next in newsDeadly nursing home shooting in TexasJuly 29, 2018Suspected killer in Arizona murder spree found dead June 4, 2018The 2024 total eclipse seen across North AmericaApril 8, 2024