Seven-year-old Khalil from the Philippines has cancer. His family hope making a campaign video might save him, because they desperately need help to pay for his treatment. But the shoot is demanding, exhausting. Khalil even has onions put in front of his eyes to make him cry.

For his mother Aljin, it’s a last-ditch attempt to help her son. But despite following every demand made by a “foreign sponsor”, she’s told the video doesn’t make any money.

Season 10 of World of Secrets, The Child Cancer Scam, is a BBC Eye investigation for the BBC World Service.

Please note, the image is being used for illustrative purposes only and the child depicted is a model.