_This movie was screened at Panic Fest._ The gruesome shocker of an opening scene is almost all that director Ariel Vida‘s “Trim Season” has going for it, and it’s all downhill from there. With a kickoff like that, it makes the rest of the sluggish film seem even slower than it actually is. I don’t want to hear any of that “but it’s a slow burn!” talk: if a movie is unhurried to the point it’s ver mais...