This is a picture of two trapeze artists who happen to be in the same family.  It is a family of four that travels the world performing in front of constantly sold out audiences, they are known as the Flying Four.  They have perfected their routines and perform incredibly daring stunts, to the joy of the viewing audiences.  But one day the family gets news that they have an opportunity to perform in front of the largest crowd they have ever performed in front of.  They are set in front of a sold out audience of about 50,000 people.  They begin their performance, but as you would assume, they were are a little nervous about the event.  They continue to perform their flawless stunts, but right near the end the the act, the young man's hands are becoming sweaty.  His sister is launched toward him, and he is of course suppose to catch her.  but do to his wet hands he is not able to grab a hold or her hands, and she tumbles down to the ground.  It was a disastrous event, and none of the family ever performed again... tragedy.
