$\frac{2-(-3)^{2}-1}{(1-3)^{2}}$

Step 1 ：Given the expression \(\frac{2-(-3)^{2}-1}{(1-3)^{2}}\)

Step 2 ：According to the order of operations, we first calculate the exponentiation, which gives us \(\frac{2-9-1}{(1-3)^{2}}\)

Step 3 ：Next, we perform the subtraction inside the parentheses, which gives us \(\frac{2-9-1}{(-2)^{2}}\)

Step 4 ：Then, we perform the exponentiation, which gives us \(\frac{2-9-1}{4}\)

Step 5 ：Next, we perform the subtraction in the numerator, which gives us \(\frac{-8}{4}\)

Step 6 ：Finally, we perform the division, which gives us -2.0

Step 7 ：So, the simplified form of the given expression is \(\boxed{-2.0}\)