I know this is probably a common topic. For me, I’m not sure if it’s a “trope” or just totally misinformed writing, but it’s how many authors approach alcoholism. Some examples are Girl on the Train and The House Across the Lake, among HUNDREDS. If anyone else here has struggled with alcoholism, you know it’s not just "i woke up after downing an entire bottle of whiskey but was able to shower, down a cup of coffee, and solve a murder. "
A completely unnecessary conflict erupting between love interests and/or the protagonist and their allies two thirds of the way into the book, generally based on a misunderstanding caused by either idiocy on the part of previously intelligent characters or absurd contrivance, and serving solely to up the stakes in an incredibly lazy and arbitrary way and signal to producers that if they buy the rights you can use this bit for the act two crisis.