G.A. Henty wrote about a hundred books with the same protagonist. He did not, to be clear, write a series of that length; his longest series is three books long, and indeed he only wrote three series to my memory.
We’ve gone over the ways you can lie in Part One, but that’s only half the battle. In fiction, a bad lie kills your story; a good lie (almost always) requires you to tell the truth eventually, finds its virtue
The first rule of lying to your reader: Don’t lie. The second rule? Lie to them all you like, as long as you’re telling the truth. Plot twists, that fabled love of many an over-enthusiastic author, rely upon such lies.