Making Your Characters Authentic - Part 3

It’s great to surprise a reader with the unexpected, helping give a twist to the plot and the character, but whatever transpires, it must have credibility.   Unless she’s a prodigy, a twelve year old girl is not going to solve the murder of her parents that happened ten years earlier.  A surgeon who graduated from Harvard is not likely to leave a sponge behind in his patient’s abdomen.  If you go for low probability events, or extreme twists, you have to back them up with plausible explanations.  The “willing suspension of disbelief” only goes so far.  Once a reader becomes skeptical that the writer doesn’t know what he or she is talking about, it’s tough to win them back.