In a sealed envelope placed in two locked boxes is a prediction which illusionist Jack Daniels has made about events he expects to unfold at this weekend's Hills Relay for Life.
The predictions were sealed at a Castle Hill shopping centre on April 10 to support the event, which raises funds for cancer research and prevention.
Mr Daniels said he became a supporter of the Cancer Council, and later the Hills Relay for Life, after his cousin died of breast cancer eight years ago.
"It's a personal thing that has touched us," he said.
"I wanted to use my skills as an illusionist to try to draw more attention to the relay and generate interest for more people to get involved.
"It's a great event. Hopefully the prediction comes true."
Daniels dedicates his 'snow effect' illusion to the nine-year-old cancer patient he created it for after a visit to The Children's Hospital at Westmead three years ago.
Hannah wished to see snow, but was too ill to travel to a snowfield.
"She told me she wanted me to make snow appear, and I couldn't then but I went and worked something out," he said.
"By the time I had gone back to the hospital to show her the snow illusion she had passed away.
"We dedicate it to her every time."
Hills mayor Michelle Byrne, a medical scientist, said the relay had become the biggest community event in The Hills in the past 12 years.
"I spent years in the lab trying to find cures for cancer and I know how difficult and costly it is," she said.
"Medical researchers are slowly chipping away at the problem, and more funding means we can put more pieces of the puzzle together."
Castle Hill Public School pupils and staff have also jumped on the purple bandwagon to raise money for cancer on April 3.
The Hills Relay for Life is on May 3 and 4 at Wrights Road Reserve, Kellyville. The first lap is at 10am for cancer survivors and carers, followed by a morning tea. Registration is $20. Jack Daniels’ predictions will be revealed at 9am on May 4. Details: 0412 368 337 or hillsrelayforlife.com.au.
What's on Saturday, May 3
9.30am - Opening ceremony (National anthem with David Sanders)
10am - Survivors walk and morning tea
10.20am - Relay begins, led by That Funky Band and Towers Ted
11am - Kymie - Gillian Schrickker (Singer)
11:30am - Crestwood School of Dance
Noon - Jack Daniels - Magic to Believe
12:20am - Drum 4 Fun (class to perform)
12.30pm - Dance HQ Dance School 2-6 years
1pm - Sister2Sister
2pm - Castle Hill High School Concert Band
3pm - Tania's Strictly Dancing
4pm - Dear Dearest (band)
4.30pm - Jackie Dee (country singer)
5.30pm - Castle Hill RSL Pipe Band
6pm - Candlelight Ceremony (Hills Music Academy and David Sanders)
8pm - Head Shave Angela Pike
8.35pm - Major raffle draw
9pm - The Breakaways and Karen Stowe (singing band)
11pm - Relay Silent Disco (all night)
What's on Sunday, May 4
6.30am - Qigong "Sheng Zhen"
7.30am - Zumba
8.30am - Drum 4 Fun Community Drum Circle
9am - Jack Daniels prediction box
10am - Last lap of Relay (Led by Castle Hill Youth Wind Orchestra)