On the outside the two seem perfectly happy and in love so when her husband was found dead at the bottom of the stairs police thought it was just natural causes. It wasnt until his family voiced their suspicion and demanded the police take another look that they started to notice the red flags. 

Sources:
The murder of Steve Clayton
https://kileystruecrime.squarespace.com/kileystruecrimeaddict-blog /the-murder-of-steve-clayton
S.C Nurse who fatally poisoned husband with eye drops: “I just wanted him to suffer”
https://www.cbsnews.com/news/lana-steve-clayton-eye-drop-poison -suffer-48-hours/
Lana Clayton pleaded guilty to poisoning her rich husband by giving him drinks laced with Visine
https://www.insideedition.com/48-hours-examines-murder-of-steve clayton-millionaire-husband-poisoned-with-eye-drops-by-wife-lana
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