HUNDREDS of walkers are expected to retrace the steps taken by tragic pensioner Peggy Mangan and her faithful dog Casper this Sunday.
The memorial walk hopes to raise awareness of Alzheimer's and missing persons.
Peggy's story touched the nation when her body was found on waste ground near Ikea on the north side of Dublin last September.
The 65-year-old was missing from her home in Terenure for four days which prompted a massive volunteer search operation.
Faithful Casper, who stood guard over the Alzheimer sufferer's body until she was found, passed away hours later from starvation and dehydration.
Hundreds of Dubliners joined in the search for the pensioner who left her house to walk her King Charles spaniel (pictured, left).
Her husband Tommy said afterwards that he could not get over the number of messages, he had received.
"Bad things happen almost every day in our country, but there are so many good people across the city and indeed around the country who are there when the time calls for being kind and supportive," said Tommy.
Peggy's family has set up the Peggy Mangan Foundation to help fund services for missing people and their families and to ensure that her memory lives on and her passing will not be in vain.
Sunday's walk will trace Peggy's route leaving Mount Jerome, Harold's Cross at noon and finish at Ikea in Ballymun.
People are invited to bring their pets with them.
Forms to sign up for the walk and raise funds are available from www.peggymangan.ie