Plaster may be a durable material, but over time it tends to develop stress cracks. To repair cracks in plaster walls, simply apply self-adhesive fiberglass mesh drywall tape over the crack, then cover the tape with a few coats of joint compound to seal the crack for good.
Tyler fixed a number of things throughout my home, including issues with windows, vents, lights, and more. He did an amazing job and was very friendly.