This week, 52 Lives wants to surprise a man from Hertfordshire in England. This man doesn't know we are trying to help him, so we can't use his name - so I'm going to call him Peter.

We heard about Peter from a colleague of his, who is a supporter of 52 Lives. Peter is in his early fifties. His wife has been diagnosed with early on set dementia. It's completely shaken his world and is causing a great deal of stress, yet he remains one of the nicest and calmest men his colleague has ever met. She described him as a genuinely incredibly kind man.

Recently, Peter's computer hard drive became corrupted. The hard drive held a lifetime of pictures and videos of their son at key times in his life. Peter had been planning to make video diaries for his wife, to help her remember her son and their family life together. He was devastated when he discovered their precious memories were gone.

Peter had a quote from a specialist company that can restore the data, but the £500 cost is just too much. There are mounting medical bills, and the photo and video diaries are sadly a luxury he cannot afford.

But what price can you put on a family's memories? And how much is it worth to be able to help a mother remember her son? Peter may not be able to afford it, but he certainly deserves to have it.