My wizard was caught reading the thoughts of a city guard as I was trying to dig for info about a friends wrongful arrest. As a result I was also arrested and thrown in prison. I was stripped of my items including my arcane focus I use for my spells...
In chapter 10 under Materials it says that the Arcane Focus can be used in place of the material components. I can't find anything in the PHB about needing a focus to cast all spells, just that it replaces the need for most materials, with a few exception such as large monetary valued materials. Does this mean I can cast spells I have prepared that only have Vocal and/or Somatic components?