Q.Is my rosemary plant hopeless since it looks dead?
My son brought a Rosemary (Christmas tree pruned) plant from Texas to Nebraska in November. I watered it as instructed and sat it outside in the day when possible, bringing it in at night without fail. I didn’t water it until it was dry within 2″ from the top. It started turning brown, so I bought a Sunlight Lamp for when it couldn’t be outside. Now it is all brown. Is it hopeless? My situation: If it is, I need to get another similar plant in here and murder my husband before July when our son will return.

Certified GKH Gardening Expert
It may not be dead, but will need ALOT of TLC to come back to its former glory. This article will tell you how to tell if it is a lost cause and what to do if it is not:
https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm
If you do need to replace it, this article will help to keep it alive:
https://www.gardeningknowhow.com/edible/herbs/rosemary/grow-rosemary-indoors.htm
I would also recommend that you not move it back and forth from inside to outside. This can be pretty stressful on a plant, especially in the winter.
Best of luck and maybe you should just beat your husband instead of murdering him. ;)