Two of them look totally dead. One is hanging on. The hot pepper plant (can't remember which it is, but I think it's Serrano) is doing fantastic. I think maybe the bells needed a light set up for the winter (something I don't think I want to spend the money on...but then, I have to use lights to start a new batch of seeds anyway). We've been remodeling and I just now had time to move my lights and stuff to another room. I'm thinking of putting the plants that look dead under lights just to see if it helps them, while I start a new batch. Would you believe my Datura conked out too? I overwintered it last year and it bloomed nicely outside, in the ground late summer. The stalk had turned to wood outside, I transplanted it back into a pot to overwinter indoors. It was doing great for weeks and then it just dropped all signs of life :-( If I had known that would happen, I would have Summer Sowed more. Ah well...adventures in overwintering... Thanks for asking, PV :-)

First off are you sure they are dead. Peppers can loose all their leaves and still be alive. I think you may have a bug problem, either aphids or spider mites. Both can be nasty and really leave your plants looking bad. Any time a plant starts to look bad fast, always start checking it for bugs. The other possibility is too moist of soil and root rot.

Sorry for your loss, but be proud of your accomplishment. I hear its a challenge to grow Ghost peppers from seed because of their slow germination and slow grrowth. Another factor is that your plant may also went into transplant shock. Usually this happens within the first 24 hours and the first signs is the plant is wilted. When I pot up, I try to do it when the roots are drier before the next watering is due. Once, I transplant them, I water using a Vitamin B1 solution formula for transplants. It works well in that it minimizes the shock on the root system and the plant will not wilt usually. Also, pepper seedlings do not like excessive amounts of water. Every few days with just enough to moisten the soil is sufficient. A little water goes a long way with peppers and they do not like wet feet so much. They like to dry out between waterings. Also, air and humidity play a role as well. If your surroundings are higher in humidity or if you live in a climate with frequent rain or moisture, it does affect your plants and the more frequent waterings your plants may be at a higher risk of dampening off which is the ultimate death sentence for seedlings. It is a delicate balance, and aftergrowing seedlings for over 10 years indoors, in a garage, and in a greenhouse, Iam always learning something. Dont give up...try again and plant lots of seeds if you can. That way if you end up losing some, you would still get a few good plants. Good luck

Not enough light. And it might be overwatered, but it sounds like you would be able to tell. Be on the lookout for spider mites too. Here are threads on the subject of trying to keep roses alive inside (not recommended, but give it a try): I couldn't help myself...potted rose How to save a potted gift rose questions about the winter (yes, really about keeping a rose indoors)