Ohhhh the shocking wordplay! This electrical engineering gem shows us the difference between serial and parallel circuits using... murderers?! In a serial circuit, the killers are arranged one after another, so the current (or victims) must pass through each one sequentially. Meanwhile, in a parallel circuit, multiple paths exist simultaneously, allowing current to flow through different routes! The voltage remains the same across each branch, but the current gets divided. Just like how electrical engineers have nightmares about circuit diagrams, this pun would make Tesla roll in his coil! ⚡💀