installment of our new series news of addiction. today a look at fentanyl. it s driving rising overdose deaths. more than 150 a day according to the u.s. centers for disease control. fentanyl is up to 100 times stronger than morphine. often mixed with other drugs to make them cheaper and more powerful and more addictive. and as miguel marquez reports for us, the pandemic has made it even harder for those struggling with addiction. i just knew in my mother s heart, my son was dead. reporter: matthew davidson, 31 years old. died from an overdose on memorial day 2020. i just remember crying out, i wasn t ready to let you go. and spent some time alone with him patting his hair, touching his hands. he looked like he was just asleep. reporter: davidson first addicted to prescription painkillers, then heroin,