[Sherlock + Crossover] Alice's Fantastic Voyage

Blurb 1 The world's only consulting detective is wasting his youth on a deserted island. The world's most self-destructive wild mage has finally run into trouble. As a deserted-island story, this is a pure, innocent romance with a light, mild, vegetarian flavor. As a pure, innocent romance, the heroine is an explorer and a wild mage who loves courting disaster. She's highly intelligent, emotionally intelligent, and has no romantic experience. As a BBC Sherlock fanfic, the hero spends most of his time in the background the author hasn't written about doing things other than solving cases, dieting, sprinting, or shooting grinning faces. He fishes with a spear, opens coconuts, fixes houses, and weaves grass mats in all sorts of ways. If you can find the humor in this blurb, then you've got the author's mild, watery sense of humor. P.S. While saving the Nth rewrite, I realized this would be a fanfic with a pretty unusual style. I guess you could call it a Sherlock AU. Anyway, if it works for you, stay; if it doesn't, move along. I don't really mind if you leave a comment with some snark before you go. I'm just an author with an unusual style, and sometimes when I look back at what I've written, I want to make fun of it too. Blurb 2 (Spoilers ahead) The premise: One day, Sherlock is shipwrecked and makes a home on a tropical volcanic island. Then he finds someone like himself. Of course, nothing happens between them. Later, they board an old warship bound for Australia and move into a cabin where someone has just died. Somehow, the ship docks in London, and as soon as they disembark, heavily armed police demand to see their IDs. Question: What does this story cross over with? If you can answer everything correctly, you're definitely a true fan of BC.