Will Taylor is a former drug dealer, and the father of Dawn Taylor. Will started a relationship with call centre worker Michelle (DS Harriet Finch undercover) and Michelle became one of the family. Secretly, Harriet was feeding information about Will to the police and after a sighting, Will was arrested. At his trial, Will learned Harriet was a police officer but didn't tell Dawn. Will was imprisoned for several years, and upon his release ended up in a Halfway House, where it was claimed he died, leaving Dawn 'deeply affected'.
All Will's years of drug dealing got his daughter involved with the drug world, and she was soon addicted to heroin because of him.
In December 2018, Dawn met "Michelle" again after many years, where she learned the truth about her being an undercover police officer all the time she was living with them.
In April 2019 Will showed up in Emmerdale, being revealed as Harriet's stalker, and it was revealed that Dawn lied to Harriet about Will being dead, and was working with him to get back at Harriet for getting Will jailed.
Will almost murders Harriet, but relents because he still loves her. Dawn turns against him after realising how much she has come to care for Harriet, and Will runs away, but late the next month he returns and sleeps with Harriet, but afterwards she regrets it and turfs him out, telling him to never come back.
Will can't take no for an answer however, and in June 2019 he shows up in Emmerdale again, once more trying to win Harriet back only to be rejected again. He then lands himself a job at Barton and Dingle Automotives (using the nickname "Taz" to hide his true identity) after swiftly fixing mechanic Dan Spencer's campervan Hettie for him, explaining he trained as a mechanic in his youth, and Dan and "Taz" successfully persuade Cain to hire him.